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Finding the Fourth Proportional to 8,386.59, 12,579.92 and 2,543.25

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Solution

The fourth proportional to 8,386.59, 12,579.92 and 2,543.25 is: 3,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.59 : 12,579.92 = 2,543.25 : x
  2. Step 2: Convert to fraction form
    8,386.59/12,579.92 = 2,543.25/x
  3. Step 3: Cross multiply
    8,386.59x = 12,579.92 × 2,543.25
  4. Step 4: Simplify right side
    8,386.59x = 31,993,881.54
  5. Step 5: Solve for x
    x = 31,993,881.54/8,386.59
  6. Step 6: Final answer
    x = 3,814.89

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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.