Home / 2,022.40-3,031.20-1,508.80

Finding the Fourth Proportional to 2,022.40, 3,031.20 and 1,508.80

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Solution

The fourth proportional to 2,022.40, 3,031.20 and 1,508.80 is: 2,261.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,022.40 : 3,031.20 = 1,508.80 : x
  2. Step 2: Convert to fraction form
    2,022.40/3,031.20 = 1,508.80/x
  3. Step 3: Cross multiply
    2,022.40x = 3,031.20 × 1,508.80
  4. Step 4: Simplify right side
    2,022.40x = 4,573,474.56
  5. Step 5: Solve for x
    x = 4,573,474.56/2,022.40
  6. Step 6: Final answer
    x = 2,261.41

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1.5x scale

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.