Home / 2,158.92-2,979.36-1,227.42

Finding the Fourth Proportional to 2,158.92, 2,979.36 and 1,227.42

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Solution

The fourth proportional to 2,158.92, 2,979.36 and 1,227.42 is: 1,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.92 : 2,979.36 = 1,227.42 : x
  2. Step 2: Convert to fraction form
    2,158.92/2,979.36 = 1,227.42/x
  3. Step 3: Cross multiply
    2,158.92x = 2,979.36 × 1,227.42
  4. Step 4: Simplify right side
    2,158.92x = 3,656,926.05
  5. Step 5: Solve for x
    x = 3,656,926.05/2,158.92
  6. Step 6: Final answer
    x = 1,693.87

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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.