Home / 8,132.20-11,220.16-5,149.30

Finding the Fourth Proportional to 8,132.20, 11,220.16 and 5,149.30

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Solution

The fourth proportional to 8,132.20, 11,220.16 and 5,149.30 is: 7,104.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.20 : 11,220.16 = 5,149.30 : x
  2. Step 2: Convert to fraction form
    8,132.20/11,220.16 = 5,149.30/x
  3. Step 3: Cross multiply
    8,132.20x = 11,220.16 × 5,149.30
  4. Step 4: Simplify right side
    8,132.20x = 57,775,969.89
  5. Step 5: Solve for x
    x = 57,775,969.89/8,132.20
  6. Step 6: Final answer
    x = 7,104.59

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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.