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Finding the Fourth Proportional to 7,639.46, 11,468.42 and 7,251.96

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Solution

The fourth proportional to 7,639.46, 11,468.42 and 7,251.96 is: 10,886.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.46 : 11,468.42 = 7,251.96 : x
  2. Step 2: Convert to fraction form
    7,639.46/11,468.42 = 7,251.96/x
  3. Step 3: Cross multiply
    7,639.46x = 11,468.42 × 7,251.96
  4. Step 4: Simplify right side
    7,639.46x = 83,168,490.87
  5. Step 5: Solve for x
    x = 83,168,490.87/7,639.46
  6. Step 6: Final answer
    x = 10,886.69

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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.