Home / 3,726.38-5,142.40-2,154.57

Finding the Fourth Proportional to 3,726.38, 5,142.40 and 2,154.57

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Solution

The fourth proportional to 3,726.38, 5,142.40 and 2,154.57 is: 2,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.38 : 5,142.40 = 2,154.57 : x
  2. Step 2: Convert to fraction form
    3,726.38/5,142.40 = 2,154.57/x
  3. Step 3: Cross multiply
    3,726.38x = 5,142.40 × 2,154.57
  4. Step 4: Simplify right side
    3,726.38x = 11,079,655.38
  5. Step 5: Solve for x
    x = 11,079,655.38/3,726.38
  6. Step 6: Final answer
    x = 2,973.31

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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.