Home / 3,218.60-4,437.78-2,222.30

Finding the Fourth Proportional to 3,218.60, 4,437.78 and 2,222.30

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Solution

The fourth proportional to 3,218.60, 4,437.78 and 2,222.30 is: 3,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.60 : 4,437.78 = 2,222.30 : x
  2. Step 2: Convert to fraction form
    3,218.60/4,437.78 = 2,222.30/x
  3. Step 3: Cross multiply
    3,218.60x = 4,437.78 × 2,222.30
  4. Step 4: Simplify right side
    3,218.60x = 9,862,078.49
  5. Step 5: Solve for x
    x = 9,862,078.49/3,218.60
  6. Step 6: Final answer
    x = 3,064.09

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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.