Home / 5,402.20-8,104.31-3,720.69

Finding the Fourth Proportional to 5,402.20, 8,104.31 and 3,720.69

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Solution

The fourth proportional to 5,402.20, 8,104.31 and 3,720.69 is: 5,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.20 : 8,104.31 = 3,720.69 : x
  2. Step 2: Convert to fraction form
    5,402.20/8,104.31 = 3,720.69/x
  3. Step 3: Cross multiply
    5,402.20x = 8,104.31 × 3,720.69
  4. Step 4: Simplify right side
    5,402.20x = 30,153,566.05
  5. Step 5: Solve for x
    x = 30,153,566.05/5,402.20
  6. Step 6: Final answer
    x = 5,581.72

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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.