Home / 2,512.30-3,764.40-2,099.20

Finding the Fourth Proportional to 2,512.30, 3,764.40 and 2,099.20

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Solution

The fourth proportional to 2,512.30, 3,764.40 and 2,099.20 is: 3,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512.30 : 3,764.40 = 2,099.20 : x
  2. Step 2: Convert to fraction form
    2,512.30/3,764.40 = 2,099.20/x
  3. Step 3: Cross multiply
    2,512.30x = 3,764.40 × 2,099.20
  4. Step 4: Simplify right side
    2,512.30x = 7,902,228.48
  5. Step 5: Solve for x
    x = 7,902,228.48/2,512.30
  6. Step 6: Final answer
    x = 3,145.42

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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.