Home / 2,138.68-2,951.16-1,579.48

Finding the Fourth Proportional to 2,138.68, 2,951.16 and 1,579.48

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Solution

The fourth proportional to 2,138.68, 2,951.16 and 1,579.48 is: 2,179.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.68 : 2,951.16 = 1,579.48 : x
  2. Step 2: Convert to fraction form
    2,138.68/2,951.16 = 1,579.48/x
  3. Step 3: Cross multiply
    2,138.68x = 2,951.16 × 1,579.48
  4. Step 4: Simplify right side
    2,138.68x = 4,661,298.20
  5. Step 5: Solve for x
    x = 4,661,298.20/2,138.68
  6. Step 6: Final answer
    x = 2,179.52

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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.