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Finding the Fourth Proportional to 3,329.99, 4,995.87 and 1,138.72

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Solution

The fourth proportional to 3,329.99, 4,995.87 and 1,138.72 is: 1,708.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.99 : 4,995.87 = 1,138.72 : x
  2. Step 2: Convert to fraction form
    3,329.99/4,995.87 = 1,138.72/x
  3. Step 3: Cross multiply
    3,329.99x = 4,995.87 × 1,138.72
  4. Step 4: Simplify right side
    3,329.99x = 5,688,872.11
  5. Step 5: Solve for x
    x = 5,688,872.11/3,329.99
  6. Step 6: Final answer
    x = 1,708.38

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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.