Home / 5,656.38-7,805.82-3,138.42

Finding the Fourth Proportional to 5,656.38, 7,805.82 and 3,138.42

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Solution

The fourth proportional to 5,656.38, 7,805.82 and 3,138.42 is: 4,331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.38 : 7,805.82 = 3,138.42 : x
  2. Step 2: Convert to fraction form
    5,656.38/7,805.82 = 3,138.42/x
  3. Step 3: Cross multiply
    5,656.38x = 7,805.82 × 3,138.42
  4. Step 4: Simplify right side
    5,656.38x = 24,497,941.60
  5. Step 5: Solve for x
    x = 24,497,941.60/5,656.38
  6. Step 6: Final answer
    x = 4,331.03

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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.