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Finding the Fourth Proportional to 11,387.61, 17,079.48 and 3,065.77

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Solution

The fourth proportional to 11,387.61, 17,079.48 and 3,065.77 is: 4,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.61 : 17,079.48 = 3,065.77 : x
  2. Step 2: Convert to fraction form
    11,387.61/17,079.48 = 3,065.77/x
  3. Step 3: Cross multiply
    11,387.61x = 17,079.48 × 3,065.77
  4. Step 4: Simplify right side
    11,387.61x = 52,361,757.40
  5. Step 5: Solve for x
    x = 52,361,757.40/11,387.61
  6. Step 6: Final answer
    x = 4,598.13

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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.