Home / 3,247.38-4,480.39-1,987.10

Finding the Fourth Proportional to 3,247.38, 4,480.39 and 1,987.10

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Solution

The fourth proportional to 3,247.38, 4,480.39 and 1,987.10 is: 2,741.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.38 : 4,480.39 = 1,987.10 : x
  2. Step 2: Convert to fraction form
    3,247.38/4,480.39 = 1,987.10/x
  3. Step 3: Cross multiply
    3,247.38x = 4,480.39 × 1,987.10
  4. Step 4: Simplify right side
    3,247.38x = 8,902,989.20
  5. Step 5: Solve for x
    x = 8,902,989.20/3,247.38
  6. Step 6: Final answer
    x = 2,741.59

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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.