Home / 6,724.40-9,280.80-3,891.85

Finding the Fourth Proportional to 6,724.40, 9,280.80 and 3,891.85

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Solution

The fourth proportional to 6,724.40, 9,280.80 and 3,891.85 is: 5,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.40 : 9,280.80 = 3,891.85 : x
  2. Step 2: Convert to fraction form
    6,724.40/9,280.80 = 3,891.85/x
  3. Step 3: Cross multiply
    6,724.40x = 9,280.80 × 3,891.85
  4. Step 4: Simplify right side
    6,724.40x = 36,119,491.21
  5. Step 5: Solve for x
    x = 36,119,491.21/6,724.40
  6. Step 6: Final answer
    x = 5,371.41

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.