Home / 2,486.16-3,431.05-1,438.22

Finding the Fourth Proportional to 2,486.16, 3,431.05 and 1,438.22

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Solution

The fourth proportional to 2,486.16, 3,431.05 and 1,438.22 is: 1,984.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.16 : 3,431.05 = 1,438.22 : x
  2. Step 2: Convert to fraction form
    2,486.16/3,431.05 = 1,438.22/x
  3. Step 3: Cross multiply
    2,486.16x = 3,431.05 × 1,438.22
  4. Step 4: Simplify right side
    2,486.16x = 4,934,604.73
  5. Step 5: Solve for x
    x = 4,934,604.73/2,486.16
  6. Step 6: Final answer
    x = 1,984.83

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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.