Home / 2,139.80-2,943.66-1,745.96

Finding the Fourth Proportional to 2,139.80, 2,943.66 and 1,745.96

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Solution

The fourth proportional to 2,139.80, 2,943.66 and 1,745.96 is: 2,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.80 : 2,943.66 = 1,745.96 : x
  2. Step 2: Convert to fraction form
    2,139.80/2,943.66 = 1,745.96/x
  3. Step 3: Cross multiply
    2,139.80x = 2,943.66 × 1,745.96
  4. Step 4: Simplify right side
    2,139.80x = 5,139,497.90
  5. Step 5: Solve for x
    x = 5,139,497.90/2,139.80
  6. Step 6: Final answer
    x = 2,401.86

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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.