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Finding the Fourth Proportional to 8,711.28, 13,068.54 and 2,868.12

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Solution

The fourth proportional to 8,711.28, 13,068.54 and 2,868.12 is: 4,302.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.28 : 13,068.54 = 2,868.12 : x
  2. Step 2: Convert to fraction form
    8,711.28/13,068.54 = 2,868.12/x
  3. Step 3: Cross multiply
    8,711.28x = 13,068.54 × 2,868.12
  4. Step 4: Simplify right side
    8,711.28x = 37,482,140.94
  5. Step 5: Solve for x
    x = 37,482,140.94/8,711.28
  6. Step 6: Final answer
    x = 4,302.71

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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.