Home / 4,511.28-6,766.80-1,391.20

Finding the Fourth Proportional to 4,511.28, 6,766.80 and 1,391.20

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Solution

The fourth proportional to 4,511.28, 6,766.80 and 1,391.20 is: 2,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,511.28 : 6,766.80 = 1,391.20 : x
  2. Step 2: Convert to fraction form
    4,511.28/6,766.80 = 1,391.20/x
  3. Step 3: Cross multiply
    4,511.28x = 6,766.80 × 1,391.20
  4. Step 4: Simplify right side
    4,511.28x = 9,413,972.16
  5. Step 5: Solve for x
    x = 9,413,972.16/4,511.28
  6. Step 6: Final answer
    x = 2,086.76

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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.