Home / 3,713.44-5,120.76-2,387.20

Finding the Fourth Proportional to 3,713.44, 5,120.76 and 2,387.20

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Solution

The fourth proportional to 3,713.44, 5,120.76 and 2,387.20 is: 3,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.44 : 5,120.76 = 2,387.20 : x
  2. Step 2: Convert to fraction form
    3,713.44/5,120.76 = 2,387.20/x
  3. Step 3: Cross multiply
    3,713.44x = 5,120.76 × 2,387.20
  4. Step 4: Simplify right side
    3,713.44x = 12,224,278.27
  5. Step 5: Solve for x
    x = 12,224,278.27/3,713.44
  6. Step 6: Final answer
    x = 3,291.90

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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.