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Finding the Fourth Proportional to 3,376.50, 5,064.70 and 1,155.31

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Solution

The fourth proportional to 3,376.50, 5,064.70 and 1,155.31 is: 1,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,376.50 : 5,064.70 = 1,155.31 : x
  2. Step 2: Convert to fraction form
    3,376.50/5,064.70 = 1,155.31/x
  3. Step 3: Cross multiply
    3,376.50x = 5,064.70 × 1,155.31
  4. Step 4: Simplify right side
    3,376.50x = 5,851,273.23
  5. Step 5: Solve for x
    x = 5,851,273.23/3,376.50
  6. Step 6: Final answer
    x = 1,732.94

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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.