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Finding the Fourth Proportional to 2,717.47, 4,076.11 and 868.69

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Solution

The fourth proportional to 2,717.47, 4,076.11 and 868.69 is: 1,303.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.47 : 4,076.11 = 868.69 : x
  2. Step 2: Convert to fraction form
    2,717.47/4,076.11 = 868.69/x
  3. Step 3: Cross multiply
    2,717.47x = 4,076.11 × 868.69
  4. Step 4: Simplify right side
    2,717.47x = 3,540,876.00
  5. Step 5: Solve for x
    x = 3,540,876.00/2,717.47
  6. Step 6: Final answer
    x = 1,303.00

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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.