Home / 5,217.60-7,200.18-3,122.40

Finding the Fourth Proportional to 5,217.60, 7,200.18 and 3,122.40

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Solution

The fourth proportional to 5,217.60, 7,200.18 and 3,122.40 is: 4,308.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.60 : 7,200.18 = 3,122.40 : x
  2. Step 2: Convert to fraction form
    5,217.60/7,200.18 = 3,122.40/x
  3. Step 3: Cross multiply
    5,217.60x = 7,200.18 × 3,122.40
  4. Step 4: Simplify right side
    5,217.60x = 22,481,842.03
  5. Step 5: Solve for x
    x = 22,481,842.03/5,217.60
  6. Step 6: Final answer
    x = 4,308.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.