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Finding the Fourth Proportional to 3,711.68, 5,568 and 1,114.88

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Solution

The fourth proportional to 3,711.68, 5,568 and 1,114.88 is: 1,672.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.68 : 5,568 = 1,114.88 : x
  2. Step 2: Convert to fraction form
    3,711.68/5,568 = 1,114.88/x
  3. Step 3: Cross multiply
    3,711.68x = 5,568 × 1,114.88
  4. Step 4: Simplify right side
    3,711.68x = 6,207,651.84
  5. Step 5: Solve for x
    x = 6,207,651.84/3,711.68
  6. Step 6: Final answer
    x = 1,672.46

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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.