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Finding the Fourth Proportional to 2,987.74, 4,122.03 and 1,793.11

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Solution

The fourth proportional to 2,987.74, 4,122.03 and 1,793.11 is: 2,473.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.74 : 4,122.03 = 1,793.11 : x
  2. Step 2: Convert to fraction form
    2,987.74/4,122.03 = 1,793.11/x
  3. Step 3: Cross multiply
    2,987.74x = 4,122.03 × 1,793.11
  4. Step 4: Simplify right side
    2,987.74x = 7,391,253.21
  5. Step 5: Solve for x
    x = 7,391,253.21/2,987.74
  6. Step 6: Final answer
    x = 2,473.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.