Home / 1,189.44-1,769.76-1,159.68

Finding the Fourth Proportional to 1,189.44, 1,769.76 and 1,159.68

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Solution

The fourth proportional to 1,189.44, 1,769.76 and 1,159.68 is: 1,725.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.44 : 1,769.76 = 1,159.68 : x
  2. Step 2: Convert to fraction form
    1,189.44/1,769.76 = 1,159.68/x
  3. Step 3: Cross multiply
    1,189.44x = 1,769.76 × 1,159.68
  4. Step 4: Simplify right side
    1,189.44x = 2,052,355.28
  5. Step 5: Solve for x
    x = 2,052,355.28/1,189.44
  6. Step 6: Final answer
    x = 1,725.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.