Home / 2,218.47-3,325.55-756.65

Finding the Fourth Proportional to 2,218.47, 3,325.55 and 756.65

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Solution

The fourth proportional to 2,218.47, 3,325.55 and 756.65 is: 1,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.47 : 3,325.55 = 756.65 : x
  2. Step 2: Convert to fraction form
    2,218.47/3,325.55 = 756.65/x
  3. Step 3: Cross multiply
    2,218.47x = 3,325.55 × 756.65
  4. Step 4: Simplify right side
    2,218.47x = 2,516,257.00
  5. Step 5: Solve for x
    x = 2,516,257.00/2,218.47
  6. Step 6: Final answer
    x = 1,134.23

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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.