Home / 5,537.20-7,640.64-3,147.12

Finding the Fourth Proportional to 5,537.20, 7,640.64 and 3,147.12

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Solution

The fourth proportional to 5,537.20, 7,640.64 and 3,147.12 is: 4,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,537.20 : 7,640.64 = 3,147.12 : x
  2. Step 2: Convert to fraction form
    5,537.20/7,640.64 = 3,147.12/x
  3. Step 3: Cross multiply
    5,537.20x = 7,640.64 × 3,147.12
  4. Step 4: Simplify right side
    5,537.20x = 24,046,010.96
  5. Step 5: Solve for x
    x = 24,046,010.96/5,537.20
  6. Step 6: Final answer
    x = 4,342.63

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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.