Home / 1,638.11-2,260.55-892.07

Finding the Fourth Proportional to 1,638.11, 2,260.55 and 892.07

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Solution

The fourth proportional to 1,638.11, 2,260.55 and 892.07 is: 1,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.11 : 2,260.55 = 892.07 : x
  2. Step 2: Convert to fraction form
    1,638.11/2,260.55 = 892.07/x
  3. Step 3: Cross multiply
    1,638.11x = 2,260.55 × 892.07
  4. Step 4: Simplify right side
    1,638.11x = 2,016,576.72
  5. Step 5: Solve for x
    x = 2,016,576.72/1,638.11
  6. Step 6: Final answer
    x = 1,231.04

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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.