Home / 7,638.05-11,458.89-2,708.12

Finding the Fourth Proportional to 7,638.05, 11,458.89 and 2,708.12

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Solution

The fourth proportional to 7,638.05, 11,458.89 and 2,708.12 is: 4,062.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.05 : 11,458.89 = 2,708.12 : x
  2. Step 2: Convert to fraction form
    7,638.05/11,458.89 = 2,708.12/x
  3. Step 3: Cross multiply
    7,638.05x = 11,458.89 × 2,708.12
  4. Step 4: Simplify right side
    7,638.05x = 31,031,991.89
  5. Step 5: Solve for x
    x = 31,031,991.89/7,638.05
  6. Step 6: Final answer
    x = 4,062.82

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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.