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Finding the Fourth Proportional to 3,329.65, 4,994.07 and 1,138.60

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Solution

The fourth proportional to 3,329.65, 4,994.07 and 1,138.60 is: 1,707.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.65 : 4,994.07 = 1,138.60 : x
  2. Step 2: Convert to fraction form
    3,329.65/4,994.07 = 1,138.60/x
  3. Step 3: Cross multiply
    3,329.65x = 4,994.07 × 1,138.60
  4. Step 4: Simplify right side
    3,329.65x = 5,686,248.10
  5. Step 5: Solve for x
    x = 5,686,248.10/3,329.65
  6. Step 6: Final answer
    x = 1,707.76

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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.