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Finding the Fourth Proportional to 8,861.76, 13,252.14 and 6,642.36

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Solution

The fourth proportional to 8,861.76, 13,252.14 and 6,642.36 is: 9,933.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.76 : 13,252.14 = 6,642.36 : x
  2. Step 2: Convert to fraction form
    8,861.76/13,252.14 = 6,642.36/x
  3. Step 3: Cross multiply
    8,861.76x = 13,252.14 × 6,642.36
  4. Step 4: Simplify right side
    8,861.76x = 88,025,484.65
  5. Step 5: Solve for x
    x = 88,025,484.65/8,861.76
  6. Step 6: Final answer
    x = 9,933.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.