Home / 2,857.12-3,943.81-1,963.81

Finding the Fourth Proportional to 2,857.12, 3,943.81 and 1,963.81

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Solution

The fourth proportional to 2,857.12, 3,943.81 and 1,963.81 is: 2,710.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.12 : 3,943.81 = 1,963.81 : x
  2. Step 2: Convert to fraction form
    2,857.12/3,943.81 = 1,963.81/x
  3. Step 3: Cross multiply
    2,857.12x = 3,943.81 × 1,963.81
  4. Step 4: Simplify right side
    2,857.12x = 7,744,893.52
  5. Step 5: Solve for x
    x = 7,744,893.52/2,857.12
  6. Step 6: Final answer
    x = 2,710.73

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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.