Home / 3,724.76-5,140.02-2,153.12

Finding the Fourth Proportional to 3,724.76, 5,140.02 and 2,153.12

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Solution

The fourth proportional to 3,724.76, 5,140.02 and 2,153.12 is: 2,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.76 : 5,140.02 = 2,153.12 : x
  2. Step 2: Convert to fraction form
    3,724.76/5,140.02 = 2,153.12/x
  3. Step 3: Cross multiply
    3,724.76x = 5,140.02 × 2,153.12
  4. Step 4: Simplify right side
    3,724.76x = 11,067,079.86
  5. Step 5: Solve for x
    x = 11,067,079.86/3,724.76
  6. Step 6: Final answer
    x = 2,971.22

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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.