Home / 2,291.68-3,162.54-1,243.75

Finding the Fourth Proportional to 2,291.68, 3,162.54 and 1,243.75

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Solution

The fourth proportional to 2,291.68, 3,162.54 and 1,243.75 is: 1,716.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.68 : 3,162.54 = 1,243.75 : x
  2. Step 2: Convert to fraction form
    2,291.68/3,162.54 = 1,243.75/x
  3. Step 3: Cross multiply
    2,291.68x = 3,162.54 × 1,243.75
  4. Step 4: Simplify right side
    2,291.68x = 3,933,409.13
  5. Step 5: Solve for x
    x = 3,933,409.13/2,291.68
  6. Step 6: Final answer
    x = 1,716.39

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1.5x scale

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.