Home / 3,419.60-5,132.40-2,031.20

Finding the Fourth Proportional to 3,419.60, 5,132.40 and 2,031.20

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Solution

The fourth proportional to 3,419.60, 5,132.40 and 2,031.20 is: 3,048.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.60 : 5,132.40 = 2,031.20 : x
  2. Step 2: Convert to fraction form
    3,419.60/5,132.40 = 2,031.20/x
  3. Step 3: Cross multiply
    3,419.60x = 5,132.40 × 2,031.20
  4. Step 4: Simplify right side
    3,419.60x = 10,424,930.88
  5. Step 5: Solve for x
    x = 10,424,930.88/3,419.60
  6. Step 6: Final answer
    x = 3,048.58

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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.