Home / 2,712.28-3,743.94-2,120.44

Finding the Fourth Proportional to 2,712.28, 3,743.94 and 2,120.44

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Solution

The fourth proportional to 2,712.28, 3,743.94 and 2,120.44 is: 2,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.28 : 3,743.94 = 2,120.44 : x
  2. Step 2: Convert to fraction form
    2,712.28/3,743.94 = 2,120.44/x
  3. Step 3: Cross multiply
    2,712.28x = 3,743.94 × 2,120.44
  4. Step 4: Simplify right side
    2,712.28x = 7,938,800.13
  5. Step 5: Solve for x
    x = 7,938,800.13/2,712.28
  6. Step 6: Final answer
    x = 2,926.98

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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.