Home / 3,062.36-4,221.20-2,808.12

Finding the Fourth Proportional to 3,062.36, 4,221.20 and 2,808.12

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Solution

The fourth proportional to 3,062.36, 4,221.20 and 2,808.12 is: 3,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,062.36 : 4,221.20 = 2,808.12 : x
  2. Step 2: Convert to fraction form
    3,062.36/4,221.20 = 2,808.12/x
  3. Step 3: Cross multiply
    3,062.36x = 4,221.20 × 2,808.12
  4. Step 4: Simplify right side
    3,062.36x = 11,853,636.14
  5. Step 5: Solve for x
    x = 11,853,636.14/3,062.36
  6. Step 6: Final answer
    x = 3,870.75

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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.