Home / 5,414.30-8,121.45-1,310.30

Finding the Fourth Proportional to 5,414.30, 8,121.45 and 1,310.30

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Solution

The fourth proportional to 5,414.30, 8,121.45 and 1,310.30 is: 1,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.30 : 8,121.45 = 1,310.30 : x
  2. Step 2: Convert to fraction form
    5,414.30/8,121.45 = 1,310.30/x
  3. Step 3: Cross multiply
    5,414.30x = 8,121.45 × 1,310.30
  4. Step 4: Simplify right side
    5,414.30x = 10,641,495.33
  5. Step 5: Solve for x
    x = 10,641,495.33/5,414.30
  6. Step 6: Final answer
    x = 1,965.44

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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.