Home / 3,971.40-5,479.44-2,377.40

Finding the Fourth Proportional to 3,971.40, 5,479.44 and 2,377.40

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Solution

The fourth proportional to 3,971.40, 5,479.44 and 2,377.40 is: 3,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.40 : 5,479.44 = 2,377.40 : x
  2. Step 2: Convert to fraction form
    3,971.40/5,479.44 = 2,377.40/x
  3. Step 3: Cross multiply
    3,971.40x = 5,479.44 × 2,377.40
  4. Step 4: Simplify right side
    3,971.40x = 13,026,793.26
  5. Step 5: Solve for x
    x = 13,026,793.26/3,971.40
  6. Step 6: Final answer
    x = 3,280.15

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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.