Home / 3,866.20-5,801.40-2,111.10

Finding the Fourth Proportional to 3,866.20, 5,801.40 and 2,111.10

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Solution

The fourth proportional to 3,866.20, 5,801.40 and 2,111.10 is: 3,167.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.20 : 5,801.40 = 2,111.10 : x
  2. Step 2: Convert to fraction form
    3,866.20/5,801.40 = 2,111.10/x
  3. Step 3: Cross multiply
    3,866.20x = 5,801.40 × 2,111.10
  4. Step 4: Simplify right side
    3,866.20x = 12,247,335.54
  5. Step 5: Solve for x
    x = 12,247,335.54/3,866.20
  6. Step 6: Final answer
    x = 3,167.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.