Home / 3,970.25-5,479.10-2,201.82

Finding the Fourth Proportional to 3,970.25, 5,479.10 and 2,201.82

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Solution

The fourth proportional to 3,970.25, 5,479.10 and 2,201.82 is: 3,038.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.25 : 5,479.10 = 2,201.82 : x
  2. Step 2: Convert to fraction form
    3,970.25/5,479.10 = 2,201.82/x
  3. Step 3: Cross multiply
    3,970.25x = 5,479.10 × 2,201.82
  4. Step 4: Simplify right side
    3,970.25x = 12,063,972.76
  5. Step 5: Solve for x
    x = 12,063,972.76/3,970.25
  6. Step 6: Final answer
    x = 3,038.59

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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.