Home / 2,192.31-3,289.90-805.66

Finding the Fourth Proportional to 2,192.31, 3,289.90 and 805.66

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Solution

The fourth proportional to 2,192.31, 3,289.90 and 805.66 is: 1,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.31 : 3,289.90 = 805.66 : x
  2. Step 2: Convert to fraction form
    2,192.31/3,289.90 = 805.66/x
  3. Step 3: Cross multiply
    2,192.31x = 3,289.90 × 805.66
  4. Step 4: Simplify right side
    2,192.31x = 2,650,524.38
  5. Step 5: Solve for x
    x = 2,650,524.38/2,192.31
  6. Step 6: Final answer
    x = 1,209.01

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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.