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Finding the Fourth Proportional to 8,991.46, 13,487.19 and 3,146.71

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Solution

The fourth proportional to 8,991.46, 13,487.19 and 3,146.71 is: 4,720.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.46 : 13,487.19 = 3,146.71 : x
  2. Step 2: Convert to fraction form
    8,991.46/13,487.19 = 3,146.71/x
  3. Step 3: Cross multiply
    8,991.46x = 13,487.19 × 3,146.71
  4. Step 4: Simplify right side
    8,991.46x = 42,440,275.64
  5. Step 5: Solve for x
    x = 42,440,275.64/8,991.46
  6. Step 6: Final answer
    x = 4,720.07

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Similar ratio
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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.