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Finding the Fourth Proportional to 9,438.76, 13,021.51 and 6,252.76

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Solution

The fourth proportional to 9,438.76, 13,021.51 and 6,252.76 is: 8,626.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,438.76 : 13,021.51 = 6,252.76 : x
  2. Step 2: Convert to fraction form
    9,438.76/13,021.51 = 6,252.76/x
  3. Step 3: Cross multiply
    9,438.76x = 13,021.51 × 6,252.76
  4. Step 4: Simplify right side
    9,438.76x = 81,420,376.87
  5. Step 5: Solve for x
    x = 81,420,376.87/9,438.76
  6. Step 6: Final answer
    x = 8,626.17

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Find fourth proportional to 4,719.38, 6,510.76 and 3,126.38
Half scale
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Double scale
Find fourth proportional to 9,439.76, 13,022.89 and 6,253.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.