Home / 1,189.90-1,641.06-894.66

Finding the Fourth Proportional to 1,189.90, 1,641.06 and 894.66

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Solution

The fourth proportional to 1,189.90, 1,641.06 and 894.66 is: 1,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.90 : 1,641.06 = 894.66 : x
  2. Step 2: Convert to fraction form
    1,189.90/1,641.06 = 894.66/x
  3. Step 3: Cross multiply
    1,189.90x = 1,641.06 × 894.66
  4. Step 4: Simplify right side
    1,189.90x = 1,468,190.74
  5. Step 5: Solve for x
    x = 1,468,190.74/1,189.90
  6. Step 6: Final answer
    x = 1,233.88

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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.