Home / 8,186.31-12,279.39-3,502.35

Finding the Fourth Proportional to 8,186.31, 12,279.39 and 3,502.35

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Solution

The fourth proportional to 8,186.31, 12,279.39 and 3,502.35 is: 5,253.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.31 : 12,279.39 = 3,502.35 : x
  2. Step 2: Convert to fraction form
    8,186.31/12,279.39 = 3,502.35/x
  3. Step 3: Cross multiply
    8,186.31x = 12,279.39 × 3,502.35
  4. Step 4: Simplify right side
    8,186.31x = 43,006,721.57
  5. Step 5: Solve for x
    x = 43,006,721.57/8,186.31
  6. Step 6: Final answer
    x = 5,253.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.