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Finding the Fourth Proportional to 8,715.71, 13,074.11 and 2,872.37

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Solution

The fourth proportional to 8,715.71, 13,074.11 and 2,872.37 is: 4,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.71 : 13,074.11 = 2,872.37 : x
  2. Step 2: Convert to fraction form
    8,715.71/13,074.11 = 2,872.37/x
  3. Step 3: Cross multiply
    8,715.71x = 13,074.11 × 2,872.37
  4. Step 4: Simplify right side
    8,715.71x = 37,553,681.34
  5. Step 5: Solve for x
    x = 37,553,681.34/8,715.71
  6. Step 6: Final answer
    x = 4,308.73

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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.