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Finding the Fourth Proportional to 2,876.92, 4,315.38 and 1,902.80

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Solution

The fourth proportional to 2,876.92, 4,315.38 and 1,902.80 is: 2,854.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.92 : 4,315.38 = 1,902.80 : x
  2. Step 2: Convert to fraction form
    2,876.92/4,315.38 = 1,902.80/x
  3. Step 3: Cross multiply
    2,876.92x = 4,315.38 × 1,902.80
  4. Step 4: Simplify right side
    2,876.92x = 8,211,305.06
  5. Step 5: Solve for x
    x = 8,211,305.06/2,876.92
  6. Step 6: Final answer
    x = 2,854.20

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1.5x scale

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.