Home / 3,460.20-5,190.30-863.13

Finding the Fourth Proportional to 3,460.20, 5,190.30 and 863.13

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Solution

The fourth proportional to 3,460.20, 5,190.30 and 863.13 is: 1,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.20 : 5,190.30 = 863.13 : x
  2. Step 2: Convert to fraction form
    3,460.20/5,190.30 = 863.13/x
  3. Step 3: Cross multiply
    3,460.20x = 5,190.30 × 863.13
  4. Step 4: Simplify right side
    3,460.20x = 4,479,903.64
  5. Step 5: Solve for x
    x = 4,479,903.64/3,460.20
  6. Step 6: Final answer
    x = 1,294.70

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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.