Home / 1,728.97-2,385.93-1,020.84

Finding the Fourth Proportional to 1,728.97, 2,385.93 and 1,020.84

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Solution

The fourth proportional to 1,728.97, 2,385.93 and 1,020.84 is: 1,408.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.97 : 2,385.93 = 1,020.84 : x
  2. Step 2: Convert to fraction form
    1,728.97/2,385.93 = 1,020.84/x
  3. Step 3: Cross multiply
    1,728.97x = 2,385.93 × 1,020.84
  4. Step 4: Simplify right side
    1,728.97x = 2,435,652.78
  5. Step 5: Solve for x
    x = 2,435,652.78/1,728.97
  6. Step 6: Final answer
    x = 1,408.73

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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.