Home / 3,866.09-5,335.11-2,187.42

Finding the Fourth Proportional to 3,866.09, 5,335.11 and 2,187.42

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Solution

The fourth proportional to 3,866.09, 5,335.11 and 2,187.42 is: 3,018.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.09 : 5,335.11 = 2,187.42 : x
  2. Step 2: Convert to fraction form
    3,866.09/5,335.11 = 2,187.42/x
  3. Step 3: Cross multiply
    3,866.09x = 5,335.11 × 2,187.42
  4. Step 4: Simplify right side
    3,866.09x = 11,670,126.32
  5. Step 5: Solve for x
    x = 11,670,126.32/3,866.09
  6. Step 6: Final answer
    x = 3,018.59

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1.5x scale

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.