Home / 2,801.31-3,864.10-1,724.75

Finding the Fourth Proportional to 2,801.31, 3,864.10 and 1,724.75

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Solution

The fourth proportional to 2,801.31, 3,864.10 and 1,724.75 is: 2,379.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.31 : 3,864.10 = 1,724.75 : x
  2. Step 2: Convert to fraction form
    2,801.31/3,864.10 = 1,724.75/x
  3. Step 3: Cross multiply
    2,801.31x = 3,864.10 × 1,724.75
  4. Step 4: Simplify right side
    2,801.31x = 6,664,618.37
  5. Step 5: Solve for x
    x = 6,664,618.37/2,801.31
  6. Step 6: Final answer
    x = 2,379.11

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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.