Home / 2,812.40-3,882.25-1,694.30

Finding the Fourth Proportional to 2,812.40, 3,882.25 and 1,694.30

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Solution

The fourth proportional to 2,812.40, 3,882.25 and 1,694.30 is: 2,338.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.40 : 3,882.25 = 1,694.30 : x
  2. Step 2: Convert to fraction form
    2,812.40/3,882.25 = 1,694.30/x
  3. Step 3: Cross multiply
    2,812.40x = 3,882.25 × 1,694.30
  4. Step 4: Simplify right side
    2,812.40x = 6,577,705.48
  5. Step 5: Solve for x
    x = 6,577,705.48/2,812.40
  6. Step 6: Final answer
    x = 2,338.82

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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.