Home / 7,144.45-10,720.31-3,449.84

Finding the Fourth Proportional to 7,144.45, 10,720.31 and 3,449.84

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Solution

The fourth proportional to 7,144.45, 10,720.31 and 3,449.84 is: 5,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.45 : 10,720.31 = 3,449.84 : x
  2. Step 2: Convert to fraction form
    7,144.45/10,720.31 = 3,449.84/x
  3. Step 3: Cross multiply
    7,144.45x = 10,720.31 × 3,449.84
  4. Step 4: Simplify right side
    7,144.45x = 36,983,309.27
  5. Step 5: Solve for x
    x = 36,983,309.27/7,144.45
  6. Step 6: Final answer
    x = 5,176.51

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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.