Home / 1,938.16-2,672.61-1,687.33

Finding the Fourth Proportional to 1,938.16, 2,672.61 and 1,687.33

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Solution

The fourth proportional to 1,938.16, 2,672.61 and 1,687.33 is: 2,326.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.16 : 2,672.61 = 1,687.33 : x
  2. Step 2: Convert to fraction form
    1,938.16/2,672.61 = 1,687.33/x
  3. Step 3: Cross multiply
    1,938.16x = 2,672.61 × 1,687.33
  4. Step 4: Simplify right side
    1,938.16x = 4,509,561.67
  5. Step 5: Solve for x
    x = 4,509,561.67/1,938.16
  6. Step 6: Final answer
    x = 2,326.73

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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.