Home / 8,318.26-12,478.61-3,388.20

Finding the Fourth Proportional to 8,318.26, 12,478.61 and 3,388.20

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Solution

The fourth proportional to 8,318.26, 12,478.61 and 3,388.20 is: 5,082.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.26 : 12,478.61 = 3,388.20 : x
  2. Step 2: Convert to fraction form
    8,318.26/12,478.61 = 3,388.20/x
  3. Step 3: Cross multiply
    8,318.26x = 12,478.61 × 3,388.20
  4. Step 4: Simplify right side
    8,318.26x = 42,280,026.40
  5. Step 5: Solve for x
    x = 42,280,026.40/8,318.26
  6. Step 6: Final answer
    x = 5,082.80

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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.