Home / 3,928.83-5,419.38-2,602.05

Finding the Fourth Proportional to 3,928.83, 5,419.38 and 2,602.05

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Solution

The fourth proportional to 3,928.83, 5,419.38 and 2,602.05 is: 3,589.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.83 : 5,419.38 = 2,602.05 : x
  2. Step 2: Convert to fraction form
    3,928.83/5,419.38 = 2,602.05/x
  3. Step 3: Cross multiply
    3,928.83x = 5,419.38 × 2,602.05
  4. Step 4: Simplify right side
    3,928.83x = 14,101,497.73
  5. Step 5: Solve for x
    x = 14,101,497.73/3,928.83
  6. Step 6: Final answer
    x = 3,589.24

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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.