Home / 2,876.61-4,311.82-1,392.70

Finding the Fourth Proportional to 2,876.61, 4,311.82 and 1,392.70

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Solution

The fourth proportional to 2,876.61, 4,311.82 and 1,392.70 is: 2,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.61 : 4,311.82 = 1,392.70 : x
  2. Step 2: Convert to fraction form
    2,876.61/4,311.82 = 1,392.70/x
  3. Step 3: Cross multiply
    2,876.61x = 4,311.82 × 1,392.70
  4. Step 4: Simplify right side
    2,876.61x = 6,005,062.68
  5. Step 5: Solve for x
    x = 6,005,062.68/2,876.61
  6. Step 6: Final answer
    x = 2,087.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.