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Finding the Fourth Proportional to 3,329.76, 4,995.12 and 1,138.56

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Solution

The fourth proportional to 3,329.76, 4,995.12 and 1,138.56 is: 1,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.76 : 4,995.12 = 1,138.56 : x
  2. Step 2: Convert to fraction form
    3,329.76/4,995.12 = 1,138.56/x
  3. Step 3: Cross multiply
    3,329.76x = 4,995.12 × 1,138.56
  4. Step 4: Simplify right side
    3,329.76x = 5,687,243.83
  5. Step 5: Solve for x
    x = 5,687,243.83/3,329.76
  6. Step 6: Final answer
    x = 1,708.00

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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.