Home / 7,218.40-10,827.20-3,268.70

Finding the Fourth Proportional to 7,218.40, 10,827.20 and 3,268.70

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Solution

The fourth proportional to 7,218.40, 10,827.20 and 3,268.70 is: 4,902.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.40 : 10,827.20 = 3,268.70 : x
  2. Step 2: Convert to fraction form
    7,218.40/10,827.20 = 3,268.70/x
  3. Step 3: Cross multiply
    7,218.40x = 10,827.20 × 3,268.70
  4. Step 4: Simplify right side
    7,218.40x = 35,390,868.64
  5. Step 5: Solve for x
    x = 35,390,868.64/7,218.40
  6. Step 6: Final answer
    x = 4,902.87

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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.