Home / 5,387.85-7,436.21-3,399.10

Finding the Fourth Proportional to 5,387.85, 7,436.21 and 3,399.10

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Solution

The fourth proportional to 5,387.85, 7,436.21 and 3,399.10 is: 4,691.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387.85 : 7,436.21 = 3,399.10 : x
  2. Step 2: Convert to fraction form
    5,387.85/7,436.21 = 3,399.10/x
  3. Step 3: Cross multiply
    5,387.85x = 7,436.21 × 3,399.10
  4. Step 4: Simplify right side
    5,387.85x = 25,276,385.82
  5. Step 5: Solve for x
    x = 25,276,385.82/5,387.85
  6. Step 6: Final answer
    x = 4,691.37

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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.