Home / 2,158.76-2,979.08-1,227.26

Finding the Fourth Proportional to 2,158.76, 2,979.08 and 1,227.26

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Solution

The fourth proportional to 2,158.76, 2,979.08 and 1,227.26 is: 1,693.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.76 : 2,979.08 = 1,227.26 : x
  2. Step 2: Convert to fraction form
    2,158.76/2,979.08 = 1,227.26/x
  3. Step 3: Cross multiply
    2,158.76x = 2,979.08 × 1,227.26
  4. Step 4: Simplify right side
    2,158.76x = 3,656,105.72
  5. Step 5: Solve for x
    x = 3,656,105.72/2,158.76
  6. Step 6: Final answer
    x = 1,693.61

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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.