Home / 3,991.28-5,507.60-2,577.02

Finding the Fourth Proportional to 3,991.28, 5,507.60 and 2,577.02

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Solution

The fourth proportional to 3,991.28, 5,507.60 and 2,577.02 is: 3,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.28 : 5,507.60 = 2,577.02 : x
  2. Step 2: Convert to fraction form
    3,991.28/5,507.60 = 2,577.02/x
  3. Step 3: Cross multiply
    3,991.28x = 5,507.60 × 2,577.02
  4. Step 4: Simplify right side
    3,991.28x = 14,193,154.93
  5. Step 5: Solve for x
    x = 14,193,154.93/3,991.28
  6. Step 6: Final answer
    x = 3,556.05

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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.