Home / 2,259.11-3,387.45-872.80

Finding the Fourth Proportional to 2,259.11, 3,387.45 and 872.80

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Solution

The fourth proportional to 2,259.11, 3,387.45 and 872.80 is: 1,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.11 : 3,387.45 = 872.80 : x
  2. Step 2: Convert to fraction form
    2,259.11/3,387.45 = 872.80/x
  3. Step 3: Cross multiply
    2,259.11x = 3,387.45 × 872.80
  4. Step 4: Simplify right side
    2,259.11x = 2,956,566.36
  5. Step 5: Solve for x
    x = 2,956,566.36/2,259.11
  6. Step 6: Final answer
    x = 1,308.73

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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.