Home / 2,309.22-3,187.14-1,314.78

Finding the Fourth Proportional to 2,309.22, 3,187.14 and 1,314.78

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Solution

The fourth proportional to 2,309.22, 3,187.14 and 1,314.78 is: 1,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.22 : 3,187.14 = 1,314.78 : x
  2. Step 2: Convert to fraction form
    2,309.22/3,187.14 = 1,314.78/x
  3. Step 3: Cross multiply
    2,309.22x = 3,187.14 × 1,314.78
  4. Step 4: Simplify right side
    2,309.22x = 4,190,387.93
  5. Step 5: Solve for x
    x = 4,190,387.93/2,309.22
  6. Step 6: Final answer
    x = 1,814.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.