Home / 3,158.38-4,728.12-2,278.90

Finding the Fourth Proportional to 3,158.38, 4,728.12 and 2,278.90

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Solution

The fourth proportional to 3,158.38, 4,728.12 and 2,278.90 is: 3,411.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.38 : 4,728.12 = 2,278.90 : x
  2. Step 2: Convert to fraction form
    3,158.38/4,728.12 = 2,278.90/x
  3. Step 3: Cross multiply
    3,158.38x = 4,728.12 × 2,278.90
  4. Step 4: Simplify right side
    3,158.38x = 10,774,912.67
  5. Step 5: Solve for x
    x = 10,774,912.67/3,158.38
  6. Step 6: Final answer
    x = 3,411.53

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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.