Home / 3,158.28-4,356.36-2,275.38

Finding the Fourth Proportional to 3,158.28, 4,356.36 and 2,275.38

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Solution

The fourth proportional to 3,158.28, 4,356.36 and 2,275.38 is: 3,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.28 : 4,356.36 = 2,275.38 : x
  2. Step 2: Convert to fraction form
    3,158.28/4,356.36 = 2,275.38/x
  3. Step 3: Cross multiply
    3,158.28x = 4,356.36 × 2,275.38
  4. Step 4: Simplify right side
    3,158.28x = 9,912,374.42
  5. Step 5: Solve for x
    x = 9,912,374.42/3,158.28
  6. Step 6: Final answer
    x = 3,138.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.