Home / 2,480.18-3,720.44-725.18

Finding the Fourth Proportional to 2,480.18, 3,720.44 and 725.18

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Solution

The fourth proportional to 2,480.18, 3,720.44 and 725.18 is: 1,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,480.18 : 3,720.44 = 725.18 : x
  2. Step 2: Convert to fraction form
    2,480.18/3,720.44 = 725.18/x
  3. Step 3: Cross multiply
    2,480.18x = 3,720.44 × 725.18
  4. Step 4: Simplify right side
    2,480.18x = 2,697,971.89
  5. Step 5: Solve for x
    x = 2,697,971.89/2,480.18
  6. Step 6: Final answer
    x = 1,087.82

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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.