Home / 7,375.38-11,053.80-2,990.40

Finding the Fourth Proportional to 7,375.38, 11,053.80 and 2,990.40

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Solution

The fourth proportional to 7,375.38, 11,053.80 and 2,990.40 is: 4,481.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,375.38 : 11,053.80 = 2,990.40 : x
  2. Step 2: Convert to fraction form
    7,375.38/11,053.80 = 2,990.40/x
  3. Step 3: Cross multiply
    7,375.38x = 11,053.80 × 2,990.40
  4. Step 4: Simplify right side
    7,375.38x = 33,055,283.52
  5. Step 5: Solve for x
    x = 33,055,283.52/7,375.38
  6. Step 6: Final answer
    x = 4,481.84

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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.