Home / 2,177.82-3,278.35-1,876.40

Finding the Fourth Proportional to 2,177.82, 3,278.35 and 1,876.40

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Solution

The fourth proportional to 2,177.82, 3,278.35 and 1,876.40 is: 2,824.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.82 : 3,278.35 = 1,876.40 : x
  2. Step 2: Convert to fraction form
    2,177.82/3,278.35 = 1,876.40/x
  3. Step 3: Cross multiply
    2,177.82x = 3,278.35 × 1,876.40
  4. Step 4: Simplify right side
    2,177.82x = 6,151,479.55
  5. Step 5: Solve for x
    x = 6,151,479.55/2,177.82
  6. Step 6: Final answer
    x = 2,824.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.