Home / 3,211.08-4,429.20-1,969.08

Finding the Fourth Proportional to 3,211.08, 4,429.20 and 1,969.08

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Solution

The fourth proportional to 3,211.08, 4,429.20 and 1,969.08 is: 2,716.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.08 : 4,429.20 = 1,969.08 : x
  2. Step 2: Convert to fraction form
    3,211.08/4,429.20 = 1,969.08/x
  3. Step 3: Cross multiply
    3,211.08x = 4,429.20 × 1,969.08
  4. Step 4: Simplify right side
    3,211.08x = 8,721,449.14
  5. Step 5: Solve for x
    x = 8,721,449.14/3,211.08
  6. Step 6: Final answer
    x = 2,716.05

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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.