Home / 8,142.13-11,223.89-6,370.66

Finding the Fourth Proportional to 8,142.13, 11,223.89 and 6,370.66

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Solution

The fourth proportional to 8,142.13, 11,223.89 and 6,370.66 is: 8,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.13 : 11,223.89 = 6,370.66 : x
  2. Step 2: Convert to fraction form
    8,142.13/11,223.89 = 6,370.66/x
  3. Step 3: Cross multiply
    8,142.13x = 11,223.89 × 6,370.66
  4. Step 4: Simplify right side
    8,142.13x = 71,503,527.15
  5. Step 5: Solve for x
    x = 71,503,527.15/8,142.13
  6. Step 6: Final answer
    x = 8,781.92

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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.