Home / 3,247.20-4,876.20-1,787.40

Finding the Fourth Proportional to 3,247.20, 4,876.20 and 1,787.40

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Solution

The fourth proportional to 3,247.20, 4,876.20 and 1,787.40 is: 2,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.20 : 4,876.20 = 1,787.40 : x
  2. Step 2: Convert to fraction form
    3,247.20/4,876.20 = 1,787.40/x
  3. Step 3: Cross multiply
    3,247.20x = 4,876.20 × 1,787.40
  4. Step 4: Simplify right side
    3,247.20x = 8,715,719.88
  5. Step 5: Solve for x
    x = 8,715,719.88/3,247.20
  6. Step 6: Final answer
    x = 2,684.07

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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.