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Finding the Fourth Proportional to 3,920.67, 5,874.39 and 1,943.67

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Solution

The fourth proportional to 3,920.67, 5,874.39 and 1,943.67 is: 2,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.67 : 5,874.39 = 1,943.67 : x
  2. Step 2: Convert to fraction form
    3,920.67/5,874.39 = 1,943.67/x
  3. Step 3: Cross multiply
    3,920.67x = 5,874.39 × 1,943.67
  4. Step 4: Simplify right side
    3,920.67x = 11,417,875.61
  5. Step 5: Solve for x
    x = 11,417,875.61/3,920.67
  6. Step 6: Final answer
    x = 2,912.23

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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.