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Finding the Fourth Proportional to 7,500.64, 11,251.02 and 3,118

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Solution

The fourth proportional to 7,500.64, 11,251.02 and 3,118 is: 4,677.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,500.64 : 11,251.02 = 3,118 : x
  2. Step 2: Convert to fraction form
    7,500.64/11,251.02 = 3,118/x
  3. Step 3: Cross multiply
    7,500.64x = 11,251.02 × 3,118
  4. Step 4: Simplify right side
    7,500.64x = 35,080,680.36
  5. Step 5: Solve for x
    x = 35,080,680.36/7,500.64
  6. Step 6: Final answer
    x = 4,677.02

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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.