Home / 6,418.80-9,630.90-3,499.20

Finding the Fourth Proportional to 6,418.80, 9,630.90 and 3,499.20

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Solution

The fourth proportional to 6,418.80, 9,630.90 and 3,499.20 is: 5,250.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.80 : 9,630.90 = 3,499.20 : x
  2. Step 2: Convert to fraction form
    6,418.80/9,630.90 = 3,499.20/x
  3. Step 3: Cross multiply
    6,418.80x = 9,630.90 × 3,499.20
  4. Step 4: Simplify right side
    6,418.80x = 33,700,445.28
  5. Step 5: Solve for x
    x = 33,700,445.28/6,418.80
  6. Step 6: Final answer
    x = 5,250.27

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Double scale
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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.