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Finding the Fourth Proportional to 8,309.99, 12,465.09 and 2,387.07

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Solution

The fourth proportional to 8,309.99, 12,465.09 and 2,387.07 is: 3,580.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.99 : 12,465.09 = 2,387.07 : x
  2. Step 2: Convert to fraction form
    8,309.99/12,465.09 = 2,387.07/x
  3. Step 3: Cross multiply
    8,309.99x = 12,465.09 × 2,387.07
  4. Step 4: Simplify right side
    8,309.99x = 29,755,042.39
  5. Step 5: Solve for x
    x = 29,755,042.39/8,309.99
  6. Step 6: Final answer
    x = 3,580.63

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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.