Home / 5,608.20-8,412.30-3,639.90

Finding the Fourth Proportional to 5,608.20, 8,412.30 and 3,639.90

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Solution

The fourth proportional to 5,608.20, 8,412.30 and 3,639.90 is: 5,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.20 : 8,412.30 = 3,639.90 : x
  2. Step 2: Convert to fraction form
    5,608.20/8,412.30 = 3,639.90/x
  3. Step 3: Cross multiply
    5,608.20x = 8,412.30 × 3,639.90
  4. Step 4: Simplify right side
    5,608.20x = 30,619,930.77
  5. Step 5: Solve for x
    x = 30,619,930.77/5,608.20
  6. Step 6: Final answer
    x = 5,459.85

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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.