Home / 2,277.80-3,418.31-979.64

Finding the Fourth Proportional to 2,277.80, 3,418.31 and 979.64

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Solution

The fourth proportional to 2,277.80, 3,418.31 and 979.64 is: 1,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.80 : 3,418.31 = 979.64 : x
  2. Step 2: Convert to fraction form
    2,277.80/3,418.31 = 979.64/x
  3. Step 3: Cross multiply
    2,277.80x = 3,418.31 × 979.64
  4. Step 4: Simplify right side
    2,277.80x = 3,348,713.21
  5. Step 5: Solve for x
    x = 3,348,713.21/2,277.80
  6. Step 6: Final answer
    x = 1,470.15

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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.