Home / 8,169.17-11,279.81-6,277.76

Finding the Fourth Proportional to 8,169.17, 11,279.81 and 6,277.76

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Solution

The fourth proportional to 8,169.17, 11,279.81 and 6,277.76 is: 8,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.17 : 11,279.81 = 6,277.76 : x
  2. Step 2: Convert to fraction form
    8,169.17/11,279.81 = 6,277.76/x
  3. Step 3: Cross multiply
    8,169.17x = 11,279.81 × 6,277.76
  4. Step 4: Simplify right side
    8,169.17x = 70,811,940.03
  5. Step 5: Solve for x
    x = 70,811,940.03/8,169.17
  6. Step 6: Final answer
    x = 8,668.19

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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.