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Finding the Fourth Proportional to 7,687.97, 10,609.61 and 4,703.75

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Solution

The fourth proportional to 7,687.97, 10,609.61 and 4,703.75 is: 6,491.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.97 : 10,609.61 = 4,703.75 : x
  2. Step 2: Convert to fraction form
    7,687.97/10,609.61 = 4,703.75/x
  3. Step 3: Cross multiply
    7,687.97x = 10,609.61 × 4,703.75
  4. Step 4: Simplify right side
    7,687.97x = 49,904,876.47
  5. Step 5: Solve for x
    x = 49,904,876.47/7,687.97
  6. Step 6: Final answer
    x = 6,491.30

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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.