Home / 1,118.21-1,541.63-960.66

Finding the Fourth Proportional to 1,118.21, 1,541.63 and 960.66

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Solution

The fourth proportional to 1,118.21, 1,541.63 and 960.66 is: 1,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.21 : 1,541.63 = 960.66 : x
  2. Step 2: Convert to fraction form
    1,118.21/1,541.63 = 960.66/x
  3. Step 3: Cross multiply
    1,118.21x = 1,541.63 × 960.66
  4. Step 4: Simplify right side
    1,118.21x = 1,480,984.68
  5. Step 5: Solve for x
    x = 1,480,984.68/1,118.21
  6. Step 6: Final answer
    x = 1,324.43

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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.