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Finding the Fourth Proportional to 2,691.54, 4,030.02 and 1,867.86

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Solution

The fourth proportional to 2,691.54, 4,030.02 and 1,867.86 is: 2,796.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.54 : 4,030.02 = 1,867.86 : x
  2. Step 2: Convert to fraction form
    2,691.54/4,030.02 = 1,867.86/x
  3. Step 3: Cross multiply
    2,691.54x = 4,030.02 × 1,867.86
  4. Step 4: Simplify right side
    2,691.54x = 7,527,513.16
  5. Step 5: Solve for x
    x = 7,527,513.16/2,691.54
  6. Step 6: Final answer
    x = 2,796.73

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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.