Home / 3,679.68-5,065.56-3,189.36

Finding the Fourth Proportional to 3,679.68, 5,065.56 and 3,189.36

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Solution

The fourth proportional to 3,679.68, 5,065.56 and 3,189.36 is: 4,390.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.68 : 5,065.56 = 3,189.36 : x
  2. Step 2: Convert to fraction form
    3,679.68/5,065.56 = 3,189.36/x
  3. Step 3: Cross multiply
    3,679.68x = 5,065.56 × 3,189.36
  4. Step 4: Simplify right side
    3,679.68x = 16,155,894.44
  5. Step 5: Solve for x
    x = 16,155,894.44/3,679.68
  6. Step 6: Final answer
    x = 4,390.57

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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.