Home / 3,991.06-5,507.35-2,397.79

Finding the Fourth Proportional to 3,991.06, 5,507.35 and 2,397.79

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Solution

The fourth proportional to 3,991.06, 5,507.35 and 2,397.79 is: 3,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.06 : 5,507.35 = 2,397.79 : x
  2. Step 2: Convert to fraction form
    3,991.06/5,507.35 = 2,397.79/x
  3. Step 3: Cross multiply
    3,991.06x = 5,507.35 × 2,397.79
  4. Step 4: Simplify right side
    3,991.06x = 13,205,468.76
  5. Step 5: Solve for x
    x = 13,205,468.76/3,991.06
  6. Step 6: Final answer
    x = 3,308.76

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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.