Home / 2,742.24-4,112.79-986.97

Finding the Fourth Proportional to 2,742.24, 4,112.79 and 986.97

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Solution

The fourth proportional to 2,742.24, 4,112.79 and 986.97 is: 1,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.24 : 4,112.79 = 986.97 : x
  2. Step 2: Convert to fraction form
    2,742.24/4,112.79 = 986.97/x
  3. Step 3: Cross multiply
    2,742.24x = 4,112.79 × 986.97
  4. Step 4: Simplify right side
    2,742.24x = 4,059,200.35
  5. Step 5: Solve for x
    x = 4,059,200.35/2,742.24
  6. Step 6: Final answer
    x = 1,480.25

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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.