Home / 3,986.74-5,501.77-2,218.34

Finding the Fourth Proportional to 3,986.74, 5,501.77 and 2,218.34

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Solution

The fourth proportional to 3,986.74, 5,501.77 and 2,218.34 is: 3,061.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.74 : 5,501.77 = 2,218.34 : x
  2. Step 2: Convert to fraction form
    3,986.74/5,501.77 = 2,218.34/x
  3. Step 3: Cross multiply
    3,986.74x = 5,501.77 × 2,218.34
  4. Step 4: Simplify right side
    3,986.74x = 12,204,785.37
  5. Step 5: Solve for x
    x = 12,204,785.37/3,986.74
  6. Step 6: Final answer
    x = 3,061.35

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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.