Home / 7,419.60-11,135.70-3,040.20

Finding the Fourth Proportional to 7,419.60, 11,135.70 and 3,040.20

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Solution

The fourth proportional to 7,419.60, 11,135.70 and 3,040.20 is: 4,562.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.60 : 11,135.70 = 3,040.20 : x
  2. Step 2: Convert to fraction form
    7,419.60/11,135.70 = 3,040.20/x
  3. Step 3: Cross multiply
    7,419.60x = 11,135.70 × 3,040.20
  4. Step 4: Simplify right side
    7,419.60x = 33,854,755.14
  5. Step 5: Solve for x
    x = 33,854,755.14/7,419.60
  6. Step 6: Final answer
    x = 4,562.88

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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.