Home / 3,212.80-4,428.48-2,694.40

Finding the Fourth Proportional to 3,212.80, 4,428.48 and 2,694.40

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Solution

The fourth proportional to 3,212.80, 4,428.48 and 2,694.40 is: 3,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.80 : 4,428.48 = 2,694.40 : x
  2. Step 2: Convert to fraction form
    3,212.80/4,428.48 = 2,694.40/x
  3. Step 3: Cross multiply
    3,212.80x = 4,428.48 × 2,694.40
  4. Step 4: Simplify right side
    3,212.80x = 11,932,096.51
  5. Step 5: Solve for x
    x = 11,932,096.51/3,212.80
  6. Step 6: Final answer
    x = 3,713.92

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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.