Home / 5,635.20-8,452.80-3,689.60

Finding the Fourth Proportional to 5,635.20, 8,452.80 and 3,689.60

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Solution

The fourth proportional to 5,635.20, 8,452.80 and 3,689.60 is: 5,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,635.20 : 8,452.80 = 3,689.60 : x
  2. Step 2: Convert to fraction form
    5,635.20/8,452.80 = 3,689.60/x
  3. Step 3: Cross multiply
    5,635.20x = 8,452.80 × 3,689.60
  4. Step 4: Simplify right side
    5,635.20x = 31,187,450.88
  5. Step 5: Solve for x
    x = 31,187,450.88/5,635.20
  6. Step 6: Final answer
    x = 5,534.40

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Half 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.