Home / 3,876.93-5,351.36-2,479.68

Finding the Fourth Proportional to 3,876.93, 5,351.36 and 2,479.68

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Solution

The fourth proportional to 3,876.93, 5,351.36 and 2,479.68 is: 3,422.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.93 : 5,351.36 = 2,479.68 : x
  2. Step 2: Convert to fraction form
    3,876.93/5,351.36 = 2,479.68/x
  3. Step 3: Cross multiply
    3,876.93x = 5,351.36 × 2,479.68
  4. Step 4: Simplify right side
    3,876.93x = 13,269,647.97
  5. Step 5: Solve for x
    x = 13,269,647.97/3,876.93
  6. Step 6: Final answer
    x = 3,422.72

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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.