Home / 1,181.15-1,629.67-945.57

Finding the Fourth Proportional to 1,181.15, 1,629.67 and 945.57

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Solution

The fourth proportional to 1,181.15, 1,629.67 and 945.57 is: 1,304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.15 : 1,629.67 = 945.57 : x
  2. Step 2: Convert to fraction form
    1,181.15/1,629.67 = 945.57/x
  3. Step 3: Cross multiply
    1,181.15x = 1,629.67 × 945.57
  4. Step 4: Simplify right side
    1,181.15x = 1,540,962.33
  5. Step 5: Solve for x
    x = 1,540,962.33/1,181.15
  6. Step 6: Final answer
    x = 1,304.63

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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.