Home / 2,691.12-3,712.70-1,984.64

Finding the Fourth Proportional to 2,691.12, 3,712.70 and 1,984.64

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Solution

The fourth proportional to 2,691.12, 3,712.70 and 1,984.64 is: 2,738.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.12 : 3,712.70 = 1,984.64 : x
  2. Step 2: Convert to fraction form
    2,691.12/3,712.70 = 1,984.64/x
  3. Step 3: Cross multiply
    2,691.12x = 3,712.70 × 1,984.64
  4. Step 4: Simplify right side
    2,691.12x = 7,368,359.33
  5. Step 5: Solve for x
    x = 7,368,359.33/2,691.12
  6. Step 6: Final answer
    x = 2,738.02

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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.