Home / 1,169.28-1,742.52-1,135.54

Finding the Fourth Proportional to 1,169.28, 1,742.52 and 1,135.54

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Solution

The fourth proportional to 1,169.28, 1,742.52 and 1,135.54 is: 1,692.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.28 : 1,742.52 = 1,135.54 : x
  2. Step 2: Convert to fraction form
    1,169.28/1,742.52 = 1,135.54/x
  3. Step 3: Cross multiply
    1,169.28x = 1,742.52 × 1,135.54
  4. Step 4: Simplify right side
    1,169.28x = 1,978,712.50
  5. Step 5: Solve for x
    x = 1,978,712.50/1,169.28
  6. Step 6: Final answer
    x = 1,692.25

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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.