Home / 2,856.28-3,943.90-2,192.08

Finding the Fourth Proportional to 2,856.28, 3,943.90 and 2,192.08

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Solution

The fourth proportional to 2,856.28, 3,943.90 and 2,192.08 is: 3,026.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.28 : 3,943.90 = 2,192.08 : x
  2. Step 2: Convert to fraction form
    2,856.28/3,943.90 = 2,192.08/x
  3. Step 3: Cross multiply
    2,856.28x = 3,943.90 × 2,192.08
  4. Step 4: Simplify right side
    2,856.28x = 8,645,344.31
  5. Step 5: Solve for x
    x = 8,645,344.31/2,856.28
  6. Step 6: Final answer
    x = 3,026.78

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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.