Home / 3,031.20-4,543.20-1,276.20

Finding the Fourth Proportional to 3,031.20, 4,543.20 and 1,276.20

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Solution

The fourth proportional to 3,031.20, 4,543.20 and 1,276.20 is: 1,912.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.20 : 4,543.20 = 1,276.20 : x
  2. Step 2: Convert to fraction form
    3,031.20/4,543.20 = 1,276.20/x
  3. Step 3: Cross multiply
    3,031.20x = 4,543.20 × 1,276.20
  4. Step 4: Simplify right side
    3,031.20x = 5,798,031.84
  5. Step 5: Solve for x
    x = 5,798,031.84/3,031.20
  6. Step 6: Final answer
    x = 1,912.78

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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.