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Finding the Fourth Proportional to 7,587, 11,382.42 and 2,115

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Solution

The fourth proportional to 7,587, 11,382.42 and 2,115 is: 3,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,587 : 11,382.42 = 2,115 : x
  2. Step 2: Convert to fraction form
    7,587/11,382.42 = 2,115/x
  3. Step 3: Cross multiply
    7,587x = 11,382.42 × 2,115
  4. Step 4: Simplify right side
    7,587x = 24,073,818.30
  5. Step 5: Solve for x
    x = 24,073,818.30/7,587
  6. Step 6: Final answer
    x = 3,173.04

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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.