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Finding the Fourth Proportional to 2,107.06, 3,154.11 and 1,243.06

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Solution

The fourth proportional to 2,107.06, 3,154.11 and 1,243.06 is: 1,860.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.06 : 3,154.11 = 1,243.06 : x
  2. Step 2: Convert to fraction form
    2,107.06/3,154.11 = 1,243.06/x
  3. Step 3: Cross multiply
    2,107.06x = 3,154.11 × 1,243.06
  4. Step 4: Simplify right side
    2,107.06x = 3,920,747.98
  5. Step 5: Solve for x
    x = 3,920,747.98/2,107.06
  6. Step 6: Final answer
    x = 1,860.77

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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.