Home / 7,122.39-10,687.40-2,965.26

Finding the Fourth Proportional to 7,122.39, 10,687.40 and 2,965.26

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Solution

The fourth proportional to 7,122.39, 10,687.40 and 2,965.26 is: 4,449.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.39 : 10,687.40 = 2,965.26 : x
  2. Step 2: Convert to fraction form
    7,122.39/10,687.40 = 2,965.26/x
  3. Step 3: Cross multiply
    7,122.39x = 10,687.40 × 2,965.26
  4. Step 4: Simplify right side
    7,122.39x = 31,690,919.72
  5. Step 5: Solve for x
    x = 31,690,919.72/7,122.39
  6. Step 6: Final answer
    x = 4,449.48

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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.