Home / 3,891.60-5,377.40-2,958.48

Finding the Fourth Proportional to 3,891.60, 5,377.40 and 2,958.48

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Solution

The fourth proportional to 3,891.60, 5,377.40 and 2,958.48 is: 4,088.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.60 : 5,377.40 = 2,958.48 : x
  2. Step 2: Convert to fraction form
    3,891.60/5,377.40 = 2,958.48/x
  3. Step 3: Cross multiply
    3,891.60x = 5,377.40 × 2,958.48
  4. Step 4: Simplify right side
    3,891.60x = 15,908,930.35
  5. Step 5: Solve for x
    x = 15,908,930.35/3,891.60
  6. Step 6: Final answer
    x = 4,088.02

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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.