Home / 2,222.68-3,331.48-1,390.12

Finding the Fourth Proportional to 2,222.68, 3,331.48 and 1,390.12

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Solution

The fourth proportional to 2,222.68, 3,331.48 and 1,390.12 is: 2,083.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.68 : 3,331.48 = 1,390.12 : x
  2. Step 2: Convert to fraction form
    2,222.68/3,331.48 = 1,390.12/x
  3. Step 3: Cross multiply
    2,222.68x = 3,331.48 × 1,390.12
  4. Step 4: Simplify right side
    2,222.68x = 4,631,156.98
  5. Step 5: Solve for x
    x = 4,631,156.98/2,222.68
  6. Step 6: Final answer
    x = 2,083.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.