Home / 5,587.20-8,380.80-3,394.80

Finding the Fourth Proportional to 5,587.20, 8,380.80 and 3,394.80

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Solution

The fourth proportional to 5,587.20, 8,380.80 and 3,394.80 is: 5,092.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,587.20 : 8,380.80 = 3,394.80 : x
  2. Step 2: Convert to fraction form
    5,587.20/8,380.80 = 3,394.80/x
  3. Step 3: Cross multiply
    5,587.20x = 8,380.80 × 3,394.80
  4. Step 4: Simplify right side
    5,587.20x = 28,451,139.84
  5. Step 5: Solve for x
    x = 28,451,139.84/5,587.20
  6. Step 6: Final answer
    x = 5,092.20

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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.