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Finding the Fourth Proportional to 3,613.97, 4,987.29 and 1,957.97

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Solution

The fourth proportional to 3,613.97, 4,987.29 and 1,957.97 is: 2,702.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.97 : 4,987.29 = 1,957.97 : x
  2. Step 2: Convert to fraction form
    3,613.97/4,987.29 = 1,957.97/x
  3. Step 3: Cross multiply
    3,613.97x = 4,987.29 × 1,957.97
  4. Step 4: Simplify right side
    3,613.97x = 9,764,939.26
  5. Step 5: Solve for x
    x = 9,764,939.26/3,613.97
  6. Step 6: Final answer
    x = 2,702.00

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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.