Home / 1,938.42-2,675.97-1,320.66

Finding the Fourth Proportional to 1,938.42, 2,675.97 and 1,320.66

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Solution

The fourth proportional to 1,938.42, 2,675.97 and 1,320.66 is: 1,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.42 : 2,675.97 = 1,320.66 : x
  2. Step 2: Convert to fraction form
    1,938.42/2,675.97 = 1,320.66/x
  3. Step 3: Cross multiply
    1,938.42x = 2,675.97 × 1,320.66
  4. Step 4: Simplify right side
    1,938.42x = 3,534,046.54
  5. Step 5: Solve for x
    x = 3,534,046.54/1,938.42
  6. Step 6: Final answer
    x = 1,823.16

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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.