Home / 2,259.18-3,387.65-872.87

Finding the Fourth Proportional to 2,259.18, 3,387.65 and 872.87

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Solution

The fourth proportional to 2,259.18, 3,387.65 and 872.87 is: 1,308.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.18 : 3,387.65 = 872.87 : x
  2. Step 2: Convert to fraction form
    2,259.18/3,387.65 = 872.87/x
  3. Step 3: Cross multiply
    2,259.18x = 3,387.65 × 872.87
  4. Step 4: Simplify right side
    2,259.18x = 2,956,956.75
  5. Step 5: Solve for x
    x = 2,956,956.75/2,259.18
  6. Step 6: Final answer
    x = 1,308.86

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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.