Home / 4,981.38-6,876.78-3,859.78

Finding the Fourth Proportional to 4,981.38, 6,876.78 and 3,859.78

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Solution

The fourth proportional to 4,981.38, 6,876.78 and 3,859.78 is: 5,328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981.38 : 6,876.78 = 3,859.78 : x
  2. Step 2: Convert to fraction form
    4,981.38/6,876.78 = 3,859.78/x
  3. Step 3: Cross multiply
    4,981.38x = 6,876.78 × 3,859.78
  4. Step 4: Simplify right side
    4,981.38x = 26,542,857.91
  5. Step 5: Solve for x
    x = 26,542,857.91/4,981.38
  6. Step 6: Final answer
    x = 5,328.41

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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.