Home / 2,171.13-3,255.48-1,478.75

Finding the Fourth Proportional to 2,171.13, 3,255.48 and 1,478.75

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Solution

The fourth proportional to 2,171.13, 3,255.48 and 1,478.75 is: 2,217.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.13 : 3,255.48 = 1,478.75 : x
  2. Step 2: Convert to fraction form
    2,171.13/3,255.48 = 1,478.75/x
  3. Step 3: Cross multiply
    2,171.13x = 3,255.48 × 1,478.75
  4. Step 4: Simplify right side
    2,171.13x = 4,814,024.77
  5. Step 5: Solve for x
    x = 4,814,024.77/2,171.13
  6. Step 6: Final answer
    x = 2,217.29

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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.