Home / 2,892.19-3,991.40-1,632.78

Finding the Fourth Proportional to 2,892.19, 3,991.40 and 1,632.78

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Solution

The fourth proportional to 2,892.19, 3,991.40 and 1,632.78 is: 2,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,892.19 : 3,991.40 = 1,632.78 : x
  2. Step 2: Convert to fraction form
    2,892.19/3,991.40 = 1,632.78/x
  3. Step 3: Cross multiply
    2,892.19x = 3,991.40 × 1,632.78
  4. Step 4: Simplify right side
    2,892.19x = 6,517,078.09
  5. Step 5: Solve for x
    x = 6,517,078.09/2,892.19
  6. Step 6: Final answer
    x = 2,253.34

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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.