Home / 8,169.48-11,278.31-5,521.59

Finding the Fourth Proportional to 8,169.48, 11,278.31 and 5,521.59

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Solution

The fourth proportional to 8,169.48, 11,278.31 and 5,521.59 is: 7,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.48 : 11,278.31 = 5,521.59 : x
  2. Step 2: Convert to fraction form
    8,169.48/11,278.31 = 5,521.59/x
  3. Step 3: Cross multiply
    8,169.48x = 11,278.31 × 5,521.59
  4. Step 4: Simplify right side
    8,169.48x = 62,274,176.10
  5. Step 5: Solve for x
    x = 62,274,176.10/8,169.48
  6. Step 6: Final answer
    x = 7,622.78

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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.