Home / 2,433.40-3,649.20-872.80

Finding the Fourth Proportional to 2,433.40, 3,649.20 and 872.80

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Solution

The fourth proportional to 2,433.40, 3,649.20 and 872.80 is: 1,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,433.40 : 3,649.20 = 872.80 : x
  2. Step 2: Convert to fraction form
    2,433.40/3,649.20 = 872.80/x
  3. Step 3: Cross multiply
    2,433.40x = 3,649.20 × 872.80
  4. Step 4: Simplify right side
    2,433.40x = 3,185,021.76
  5. Step 5: Solve for x
    x = 3,185,021.76/2,433.40
  6. Step 6: Final answer
    x = 1,308.88

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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.