Home / 1,638.22-2,260.73-892.17

Finding the Fourth Proportional to 1,638.22, 2,260.73 and 892.17

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Solution

The fourth proportional to 1,638.22, 2,260.73 and 892.17 is: 1,231.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.22 : 2,260.73 = 892.17 : x
  2. Step 2: Convert to fraction form
    1,638.22/2,260.73 = 892.17/x
  3. Step 3: Cross multiply
    1,638.22x = 2,260.73 × 892.17
  4. Step 4: Simplify right side
    1,638.22x = 2,016,955.48
  5. Step 5: Solve for x
    x = 2,016,955.48/1,638.22
  6. Step 6: Final answer
    x = 1,231.19

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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.