Home / 3,991.02-5,507.64-2,222.52

Finding the Fourth Proportional to 3,991.02, 5,507.64 and 2,222.52

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Solution

The fourth proportional to 3,991.02, 5,507.64 and 2,222.52 is: 3,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.02 : 5,507.64 = 2,222.52 : x
  2. Step 2: Convert to fraction form
    3,991.02/5,507.64 = 2,222.52/x
  3. Step 3: Cross multiply
    3,991.02x = 5,507.64 × 2,222.52
  4. Step 4: Simplify right side
    3,991.02x = 12,240,840.05
  5. Step 5: Solve for x
    x = 12,240,840.05/3,991.02
  6. Step 6: Final answer
    x = 3,067.10

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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.