Home / 8,319.92-12,479.87-3,388.23

Finding the Fourth Proportional to 8,319.92, 12,479.87 and 3,388.23

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Solution

The fourth proportional to 8,319.92, 12,479.87 and 3,388.23 is: 5,082.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.92 : 12,479.87 = 3,388.23 : x
  2. Step 2: Convert to fraction form
    8,319.92/12,479.87 = 3,388.23/x
  3. Step 3: Cross multiply
    8,319.92x = 12,479.87 × 3,388.23
  4. Step 4: Simplify right side
    8,319.92x = 42,284,678.40
  5. Step 5: Solve for x
    x = 42,284,678.40/8,319.92
  6. Step 6: Final answer
    x = 5,082.35

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Double scale
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Similar ratio
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1.5x scale

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.