Home / 1,619.52-2,232.05-1,305.78

Finding the Fourth Proportional to 1,619.52, 2,232.05 and 1,305.78

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Solution

The fourth proportional to 1,619.52, 2,232.05 and 1,305.78 is: 1,799.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.52 : 2,232.05 = 1,305.78 : x
  2. Step 2: Convert to fraction form
    1,619.52/2,232.05 = 1,305.78/x
  3. Step 3: Cross multiply
    1,619.52x = 2,232.05 × 1,305.78
  4. Step 4: Simplify right side
    1,619.52x = 2,914,566.25
  5. Step 5: Solve for x
    x = 2,914,566.25/1,619.52
  6. Step 6: Final answer
    x = 1,799.65

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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.