Home / 5,218.68-7,200.78-3,122.04

Finding the Fourth Proportional to 5,218.68, 7,200.78 and 3,122.04

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Solution

The fourth proportional to 5,218.68, 7,200.78 and 3,122.04 is: 4,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.68 : 7,200.78 = 3,122.04 : x
  2. Step 2: Convert to fraction form
    5,218.68/7,200.78 = 3,122.04/x
  3. Step 3: Cross multiply
    5,218.68x = 7,200.78 × 3,122.04
  4. Step 4: Simplify right side
    5,218.68x = 22,481,123.19
  5. Step 5: Solve for x
    x = 22,481,123.19/5,218.68
  6. Step 6: Final answer
    x = 4,307.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.