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Finding the Fourth Proportional to 2,867.28, 4,301.04 and 787.22

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Solution

The fourth proportional to 2,867.28, 4,301.04 and 787.22 is: 1,180.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.28 : 4,301.04 = 787.22 : x
  2. Step 2: Convert to fraction form
    2,867.28/4,301.04 = 787.22/x
  3. Step 3: Cross multiply
    2,867.28x = 4,301.04 × 787.22
  4. Step 4: Simplify right side
    2,867.28x = 3,385,864.71
  5. Step 5: Solve for x
    x = 3,385,864.71/2,867.28
  6. Step 6: Final answer
    x = 1,180.86

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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.