Home / 5,387.21-7,431.85-3,149.18

Finding the Fourth Proportional to 5,387.21, 7,431.85 and 3,149.18

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Solution

The fourth proportional to 5,387.21, 7,431.85 and 3,149.18 is: 4,344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.21 : 7,431.85 = 3,149.18 : x
  2. Step 2: Convert to fraction form
    5,387.21/7,431.85 = 3,149.18/x
  3. Step 3: Cross multiply
    5,387.21x = 7,431.85 × 3,149.18
  4. Step 4: Simplify right side
    5,387.21x = 23,404,233.38
  5. Step 5: Solve for x
    x = 23,404,233.38/5,387.21
  6. Step 6: Final answer
    x = 4,344.41

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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.