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Finding the Fourth Proportional to 8,881.71, 13,321.51 and 6,909.32

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Solution

The fourth proportional to 8,881.71, 13,321.51 and 6,909.32 is: 10,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.71 : 13,321.51 = 6,909.32 : x
  2. Step 2: Convert to fraction form
    8,881.71/13,321.51 = 6,909.32/x
  3. Step 3: Cross multiply
    8,881.71x = 13,321.51 × 6,909.32
  4. Step 4: Simplify right side
    8,881.71x = 92,042,491.59
  5. Step 5: Solve for x
    x = 92,042,491.59/8,881.71
  6. Step 6: Final answer
    x = 10,363.15

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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.