Home / 7,839.13-11,759.30-2,645

Finding the Fourth Proportional to 7,839.13, 11,759.30 and 2,645

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Solution

The fourth proportional to 7,839.13, 11,759.30 and 2,645 is: 3,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.13 : 11,759.30 = 2,645 : x
  2. Step 2: Convert to fraction form
    7,839.13/11,759.30 = 2,645/x
  3. Step 3: Cross multiply
    7,839.13x = 11,759.30 × 2,645
  4. Step 4: Simplify right side
    7,839.13x = 31,103,348.50
  5. Step 5: Solve for x
    x = 31,103,348.50/7,839.13
  6. Step 6: Final answer
    x = 3,967.70

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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.