Home / 5,375.90-7,419.65-3,138.02

Finding the Fourth Proportional to 5,375.90, 7,419.65 and 3,138.02

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Solution

The fourth proportional to 5,375.90, 7,419.65 and 3,138.02 is: 4,331.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,375.90 : 7,419.65 = 3,138.02 : x
  2. Step 2: Convert to fraction form
    5,375.90/7,419.65 = 3,138.02/x
  3. Step 3: Cross multiply
    5,375.90x = 7,419.65 × 3,138.02
  4. Step 4: Simplify right side
    5,375.90x = 23,283,044.52
  5. Step 5: Solve for x
    x = 23,283,044.52/5,375.90
  6. Step 6: Final answer
    x = 4,331.00

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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.