Home / 3,459.88-5,190.50-1,120.47

Finding the Fourth Proportional to 3,459.88, 5,190.50 and 1,120.47

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Solution

The fourth proportional to 3,459.88, 5,190.50 and 1,120.47 is: 1,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.88 : 5,190.50 = 1,120.47 : x
  2. Step 2: Convert to fraction form
    3,459.88/5,190.50 = 1,120.47/x
  3. Step 3: Cross multiply
    3,459.88x = 5,190.50 × 1,120.47
  4. Step 4: Simplify right side
    3,459.88x = 5,815,799.54
  5. Step 5: Solve for x
    x = 5,815,799.54/3,459.88
  6. Step 6: Final answer
    x = 1,680.93

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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.