Home / 3,876.12-5,350.88-2,479.68

Finding the Fourth Proportional to 3,876.12, 5,350.88 and 2,479.68

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Solution

The fourth proportional to 3,876.12, 5,350.88 and 2,479.68 is: 3,423.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.12 : 5,350.88 = 2,479.68 : x
  2. Step 2: Convert to fraction form
    3,876.12/5,350.88 = 2,479.68/x
  3. Step 3: Cross multiply
    3,876.12x = 5,350.88 × 2,479.68
  4. Step 4: Simplify right side
    3,876.12x = 13,268,476.32
  5. Step 5: Solve for x
    x = 13,268,476.32/3,876.12
  6. Step 6: Final answer
    x = 3,423.13

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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.