Home / 5,139.40-7,708.82-1,441.88

Finding the Fourth Proportional to 5,139.40, 7,708.82 and 1,441.88

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Solution

The fourth proportional to 5,139.40, 7,708.82 and 1,441.88 is: 2,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.40 : 7,708.82 = 1,441.88 : x
  2. Step 2: Convert to fraction form
    5,139.40/7,708.82 = 1,441.88/x
  3. Step 3: Cross multiply
    5,139.40x = 7,708.82 × 1,441.88
  4. Step 4: Simplify right side
    5,139.40x = 11,115,216.26
  5. Step 5: Solve for x
    x = 11,115,216.26/5,139.40
  6. Step 6: Final answer
    x = 2,162.75

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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.