Home / 5,354.85-7,388.41-3,115.38

Finding the Fourth Proportional to 5,354.85, 7,388.41 and 3,115.38

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Solution

The fourth proportional to 5,354.85, 7,388.41 and 3,115.38 is: 4,298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,354.85 : 7,388.41 = 3,115.38 : x
  2. Step 2: Convert to fraction form
    5,354.85/7,388.41 = 3,115.38/x
  3. Step 3: Cross multiply
    5,354.85x = 7,388.41 × 3,115.38
  4. Step 4: Simplify right side
    5,354.85x = 23,017,704.75
  5. Step 5: Solve for x
    x = 23,017,704.75/5,354.85
  6. Step 6: Final answer
    x = 4,298.48

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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.