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Finding the Fourth Proportional to 3,963.65, 5,472.51 and 3,542.65

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Solution

The fourth proportional to 3,963.65, 5,472.51 and 3,542.65 is: 4,891.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.65 : 5,472.51 = 3,542.65 : x
  2. Step 2: Convert to fraction form
    3,963.65/5,472.51 = 3,542.65/x
  3. Step 3: Cross multiply
    3,963.65x = 5,472.51 × 3,542.65
  4. Step 4: Simplify right side
    3,963.65x = 19,387,187.55
  5. Step 5: Solve for x
    x = 19,387,187.55/3,963.65
  6. Step 6: Final answer
    x = 4,891.25

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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.