Home / 7,842.11-11,755.60-2,645.15

Finding the Fourth Proportional to 7,842.11, 11,755.60 and 2,645.15

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Solution

The fourth proportional to 7,842.11, 11,755.60 and 2,645.15 is: 3,965.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.11 : 11,755.60 = 2,645.15 : x
  2. Step 2: Convert to fraction form
    7,842.11/11,755.60 = 2,645.15/x
  3. Step 3: Cross multiply
    7,842.11x = 11,755.60 × 2,645.15
  4. Step 4: Simplify right side
    7,842.11x = 31,095,259.95
  5. Step 5: Solve for x
    x = 31,095,259.95/7,842.11
  6. Step 6: Final answer
    x = 3,965.17

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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.