Home / 3,215.08-4,435.31-2,081.12

Finding the Fourth Proportional to 3,215.08, 4,435.31 and 2,081.12

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Solution

The fourth proportional to 3,215.08, 4,435.31 and 2,081.12 is: 2,870.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.08 : 4,435.31 = 2,081.12 : x
  2. Step 2: Convert to fraction form
    3,215.08/4,435.31 = 2,081.12/x
  3. Step 3: Cross multiply
    3,215.08x = 4,435.31 × 2,081.12
  4. Step 4: Simplify right side
    3,215.08x = 9,230,399.55
  5. Step 5: Solve for x
    x = 9,230,399.55/3,215.08
  6. Step 6: Final answer
    x = 2,870.97

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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.