Home / 3,726.76-5,142.98-2,155.24

Finding the Fourth Proportional to 3,726.76, 5,142.98 and 2,155.24

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Solution

The fourth proportional to 3,726.76, 5,142.98 and 2,155.24 is: 2,974.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,726.76 : 5,142.98 = 2,155.24 : x
  2. Step 2: Convert to fraction form
    3,726.76/5,142.98 = 2,155.24/x
  3. Step 3: Cross multiply
    3,726.76x = 5,142.98 × 2,155.24
  4. Step 4: Simplify right side
    3,726.76x = 11,084,356.22
  5. Step 5: Solve for x
    x = 11,084,356.22/3,726.76
  6. Step 6: Final answer
    x = 2,974.26

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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.