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Finding the Fourth Proportional to 5,641.97, 7,789.47 and 3,626.29

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Solution

The fourth proportional to 5,641.97, 7,789.47 and 3,626.29 is: 5,006.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.97 : 7,789.47 = 3,626.29 : x
  2. Step 2: Convert to fraction form
    5,641.97/7,789.47 = 3,626.29/x
  3. Step 3: Cross multiply
    5,641.97x = 7,789.47 × 3,626.29
  4. Step 4: Simplify right side
    5,641.97x = 28,246,838.22
  5. Step 5: Solve for x
    x = 28,246,838.22/5,641.97
  6. Step 6: Final answer
    x = 5,006.56

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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.