Home / 3,726.19-5,142.14-2,154.28

Finding the Fourth Proportional to 3,726.19, 5,142.14 and 2,154.28

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Solution

The fourth proportional to 3,726.19, 5,142.14 and 2,154.28 is: 2,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.19 : 5,142.14 = 2,154.28 : x
  2. Step 2: Convert to fraction form
    3,726.19/5,142.14 = 2,154.28/x
  3. Step 3: Cross multiply
    3,726.19x = 5,142.14 × 2,154.28
  4. Step 4: Simplify right side
    3,726.19x = 11,077,609.36
  5. Step 5: Solve for x
    x = 11,077,609.36/3,726.19
  6. Step 6: Final answer
    x = 2,972.91

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Half scale
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Double scale
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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.