Home / 7,138.25-10,708.05-2,458.07

Finding the Fourth Proportional to 7,138.25, 10,708.05 and 2,458.07

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Solution

The fourth proportional to 7,138.25, 10,708.05 and 2,458.07 is: 3,687.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.25 : 10,708.05 = 2,458.07 : x
  2. Step 2: Convert to fraction form
    7,138.25/10,708.05 = 2,458.07/x
  3. Step 3: Cross multiply
    7,138.25x = 10,708.05 × 2,458.07
  4. Step 4: Simplify right side
    7,138.25x = 26,321,136.46
  5. Step 5: Solve for x
    x = 26,321,136.46/7,138.25
  6. Step 6: Final answer
    x = 3,687.34

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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.