Home / 8,177.96-11,279.50-5,191.20

Finding the Fourth Proportional to 8,177.96, 11,279.50 and 5,191.20

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Solution

The fourth proportional to 8,177.96, 11,279.50 and 5,191.20 is: 7,159.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,177.96 : 11,279.50 = 5,191.20 : x
  2. Step 2: Convert to fraction form
    8,177.96/11,279.50 = 5,191.20/x
  3. Step 3: Cross multiply
    8,177.96x = 11,279.50 × 5,191.20
  4. Step 4: Simplify right side
    8,177.96x = 58,554,140.40
  5. Step 5: Solve for x
    x = 58,554,140.40/8,177.96
  6. Step 6: Final answer
    x = 7,159.99

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Double scale
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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.