Home / 1,279.97-1,918.35-548.69

Finding the Fourth Proportional to 1,279.97, 1,918.35 and 548.69

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Solution

The fourth proportional to 1,279.97, 1,918.35 and 548.69 is: 822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279.97 : 1,918.35 = 548.69 : x
  2. Step 2: Convert to fraction form
    1,279.97/1,918.35 = 548.69/x
  3. Step 3: Cross multiply
    1,279.97x = 1,918.35 × 548.69
  4. Step 4: Simplify right side
    1,279.97x = 1,052,584.26
  5. Step 5: Solve for x
    x = 1,052,584.26/1,279.97
  6. Step 6: Final answer
    x = 822.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.