Home / 3,989.37-5,507.33-3,091.11

Finding the Fourth Proportional to 3,989.37, 5,507.33 and 3,091.11

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Solution

The fourth proportional to 3,989.37, 5,507.33 and 3,091.11 is: 4,267.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.37 : 5,507.33 = 3,091.11 : x
  2. Step 2: Convert to fraction form
    3,989.37/5,507.33 = 3,091.11/x
  3. Step 3: Cross multiply
    3,989.37x = 5,507.33 × 3,091.11
  4. Step 4: Simplify right side
    3,989.37x = 17,023,719.84
  5. Step 5: Solve for x
    x = 17,023,719.84/3,989.37
  6. Step 6: Final answer
    x = 4,267.27

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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.