Home / 2,749.60-4,124.40-2,231.20

Finding the Fourth Proportional to 2,749.60, 4,124.40 and 2,231.20

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Solution

The fourth proportional to 2,749.60, 4,124.40 and 2,231.20 is: 3,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,749.60 : 4,124.40 = 2,231.20 : x
  2. Step 2: Convert to fraction form
    2,749.60/4,124.40 = 2,231.20/x
  3. Step 3: Cross multiply
    2,749.60x = 4,124.40 × 2,231.20
  4. Step 4: Simplify right side
    2,749.60x = 9,202,361.28
  5. Step 5: Solve for x
    x = 9,202,361.28/2,749.60
  6. Step 6: Final answer
    x = 3,346.80

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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.