Home / 2,185.04-3,278.12-724.60

Finding the Fourth Proportional to 2,185.04, 3,278.12 and 724.60

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Solution

The fourth proportional to 2,185.04, 3,278.12 and 724.60 is: 1,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.04 : 3,278.12 = 724.60 : x
  2. Step 2: Convert to fraction form
    2,185.04/3,278.12 = 724.60/x
  3. Step 3: Cross multiply
    2,185.04x = 3,278.12 × 724.60
  4. Step 4: Simplify right side
    2,185.04x = 2,375,325.75
  5. Step 5: Solve for x
    x = 2,375,325.75/2,185.04
  6. Step 6: Final answer
    x = 1,087.09

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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.