Home / 2,961.60-4,443.36-1,422.72

Finding the Fourth Proportional to 2,961.60, 4,443.36 and 1,422.72

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Solution

The fourth proportional to 2,961.60, 4,443.36 and 1,422.72 is: 2,134.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.60 : 4,443.36 = 1,422.72 : x
  2. Step 2: Convert to fraction form
    2,961.60/4,443.36 = 1,422.72/x
  3. Step 3: Cross multiply
    2,961.60x = 4,443.36 × 1,422.72
  4. Step 4: Simplify right side
    2,961.60x = 6,321,657.14
  5. Step 5: Solve for x
    x = 6,321,657.14/2,961.60
  6. Step 6: Final answer
    x = 2,134.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.