Home / 3,986.55-5,501.43-2,218.14

Finding the Fourth Proportional to 3,986.55, 5,501.43 and 2,218.14

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Solution

The fourth proportional to 3,986.55, 5,501.43 and 2,218.14 is: 3,061.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.55 : 5,501.43 = 2,218.14 : x
  2. Step 2: Convert to fraction form
    3,986.55/5,501.43 = 2,218.14/x
  3. Step 3: Cross multiply
    3,986.55x = 5,501.43 × 2,218.14
  4. Step 4: Simplify right side
    3,986.55x = 12,202,941.94
  5. Step 5: Solve for x
    x = 12,202,941.94/3,986.55
  6. Step 6: Final answer
    x = 3,061.03

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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.