Home / 3,986.64-5,501.43-2,218.32

Finding the Fourth Proportional to 3,986.64, 5,501.43 and 2,218.32

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Solution

The fourth proportional to 3,986.64, 5,501.43 and 2,218.32 is: 3,061.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.64 : 5,501.43 = 2,218.32 : x
  2. Step 2: Convert to fraction form
    3,986.64/5,501.43 = 2,218.32/x
  3. Step 3: Cross multiply
    3,986.64x = 5,501.43 × 2,218.32
  4. Step 4: Simplify right side
    3,986.64x = 12,203,932.20
  5. Step 5: Solve for x
    x = 12,203,932.20/3,986.64
  6. Step 6: Final answer
    x = 3,061.21

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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.