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Finding the Fourth Proportional to 2,999.89, 4,500.78 and 1,151.02

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Solution

The fourth proportional to 2,999.89, 4,500.78 and 1,151.02 is: 1,726.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.89 : 4,500.78 = 1,151.02 : x
  2. Step 2: Convert to fraction form
    2,999.89/4,500.78 = 1,151.02/x
  3. Step 3: Cross multiply
    2,999.89x = 4,500.78 × 1,151.02
  4. Step 4: Simplify right side
    2,999.89x = 5,180,487.80
  5. Step 5: Solve for x
    x = 5,180,487.80/2,999.89
  6. Step 6: Final answer
    x = 1,726.89

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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.