Home / 1,279.18-1,910.09-1,016.22

Finding the Fourth Proportional to 1,279.18, 1,910.09 and 1,016.22

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Solution

The fourth proportional to 1,279.18, 1,910.09 and 1,016.22 is: 1,517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.18 : 1,910.09 = 1,016.22 : x
  2. Step 2: Convert to fraction form
    1,279.18/1,910.09 = 1,016.22/x
  3. Step 3: Cross multiply
    1,279.18x = 1,910.09 × 1,016.22
  4. Step 4: Simplify right side
    1,279.18x = 1,941,071.66
  5. Step 5: Solve for x
    x = 1,941,071.66/1,279.18
  6. Step 6: Final answer
    x = 1,517.43

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1.5x scale

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.