Home / 3,986.52-5,501.70-2,218.29

Finding the Fourth Proportional to 3,986.52, 5,501.70 and 2,218.29

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Solution

The fourth proportional to 3,986.52, 5,501.70 and 2,218.29 is: 3,061.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.52 : 5,501.70 = 2,218.29 : x
  2. Step 2: Convert to fraction form
    3,986.52/5,501.70 = 2,218.29/x
  3. Step 3: Cross multiply
    3,986.52x = 5,501.70 × 2,218.29
  4. Step 4: Simplify right side
    3,986.52x = 12,204,366.09
  5. Step 5: Solve for x
    x = 12,204,366.09/3,986.52
  6. Step 6: Final answer
    x = 3,061.41

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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.