Home / 2,180.92-3,011.26-1,342.78

Finding the Fourth Proportional to 2,180.92, 3,011.26 and 1,342.78

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Solution

The fourth proportional to 2,180.92, 3,011.26 and 1,342.78 is: 1,854.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.92 : 3,011.26 = 1,342.78 : x
  2. Step 2: Convert to fraction form
    2,180.92/3,011.26 = 1,342.78/x
  3. Step 3: Cross multiply
    2,180.92x = 3,011.26 × 1,342.78
  4. Step 4: Simplify right side
    2,180.92x = 4,043,459.70
  5. Step 5: Solve for x
    x = 4,043,459.70/2,180.92
  6. Step 6: Final answer
    x = 1,854.02

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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.