Home / 3,120.96-4,304.88-2,187.84

Finding the Fourth Proportional to 3,120.96, 4,304.88 and 2,187.84

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Solution

The fourth proportional to 3,120.96, 4,304.88 and 2,187.84 is: 3,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.96 : 4,304.88 = 2,187.84 : x
  2. Step 2: Convert to fraction form
    3,120.96/4,304.88 = 2,187.84/x
  3. Step 3: Cross multiply
    3,120.96x = 4,304.88 × 2,187.84
  4. Step 4: Simplify right side
    3,120.96x = 9,418,388.66
  5. Step 5: Solve for x
    x = 9,418,388.66/3,120.96
  6. Step 6: Final answer
    x = 3,017.79

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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.