Home / 3,211.07-4,428.82-2,218.01

Finding the Fourth Proportional to 3,211.07, 4,428.82 and 2,218.01

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Solution

The fourth proportional to 3,211.07, 4,428.82 and 2,218.01 is: 3,059.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.07 : 4,428.82 = 2,218.01 : x
  2. Step 2: Convert to fraction form
    3,211.07/4,428.82 = 2,218.01/x
  3. Step 3: Cross multiply
    3,211.07x = 4,428.82 × 2,218.01
  4. Step 4: Simplify right side
    3,211.07x = 9,823,167.05
  5. Step 5: Solve for x
    x = 9,823,167.05/3,211.07
  6. Step 6: Final answer
    x = 3,059.16

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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.