Home / 1,620.67-2,236.51-922.04

Finding the Fourth Proportional to 1,620.67, 2,236.51 and 922.04

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Solution

The fourth proportional to 1,620.67, 2,236.51 and 922.04 is: 1,272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.67 : 2,236.51 = 922.04 : x
  2. Step 2: Convert to fraction form
    1,620.67/2,236.51 = 922.04/x
  3. Step 3: Cross multiply
    1,620.67x = 2,236.51 × 922.04
  4. Step 4: Simplify right side
    1,620.67x = 2,062,147.07
  5. Step 5: Solve for x
    x = 2,062,147.07/1,620.67
  6. Step 6: Final answer
    x = 1,272.41

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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.