Home / 2,851.85-3,935.52-2,011.68

Finding the Fourth Proportional to 2,851.85, 3,935.52 and 2,011.68

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Solution

The fourth proportional to 2,851.85, 3,935.52 and 2,011.68 is: 2,776.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.85 : 3,935.52 = 2,011.68 : x
  2. Step 2: Convert to fraction form
    2,851.85/3,935.52 = 2,011.68/x
  3. Step 3: Cross multiply
    2,851.85x = 3,935.52 × 2,011.68
  4. Step 4: Simplify right side
    2,851.85x = 7,917,006.87
  5. Step 5: Solve for x
    x = 7,917,006.87/2,851.85
  6. Step 6: Final answer
    x = 2,776.09

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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.