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Finding the Fourth Proportional to 8,715.52, 12,019.14 and 5,733.88

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Solution

The fourth proportional to 8,715.52, 12,019.14 and 5,733.88 is: 7,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.52 : 12,019.14 = 5,733.88 : x
  2. Step 2: Convert to fraction form
    8,715.52/12,019.14 = 5,733.88/x
  3. Step 3: Cross multiply
    8,715.52x = 12,019.14 × 5,733.88
  4. Step 4: Simplify right side
    8,715.52x = 68,916,306.46
  5. Step 5: Solve for x
    x = 68,916,306.46/8,715.52
  6. Step 6: Final answer
    x = 7,907.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.