Home / 7,138.12-10,704.51-2,456.80

Finding the Fourth Proportional to 7,138.12, 10,704.51 and 2,456.80

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Solution

The fourth proportional to 7,138.12, 10,704.51 and 2,456.80 is: 3,684.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.12 : 10,704.51 = 2,456.80 : x
  2. Step 2: Convert to fraction form
    7,138.12/10,704.51 = 2,456.80/x
  3. Step 3: Cross multiply
    7,138.12x = 10,704.51 × 2,456.80
  4. Step 4: Simplify right side
    7,138.12x = 26,298,840.17
  5. Step 5: Solve for x
    x = 26,298,840.17/7,138.12
  6. Step 6: Final answer
    x = 3,684.28

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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.