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Finding the Fourth Proportional to 2,604.61, 3,906.92 and 1,143.78

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Solution

The fourth proportional to 2,604.61, 3,906.92 and 1,143.78 is: 1,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,604.61 : 3,906.92 = 1,143.78 : x
  2. Step 2: Convert to fraction form
    2,604.61/3,906.92 = 1,143.78/x
  3. Step 3: Cross multiply
    2,604.61x = 3,906.92 × 1,143.78
  4. Step 4: Simplify right side
    2,604.61x = 4,468,656.96
  5. Step 5: Solve for x
    x = 4,468,656.96/2,604.61
  6. Step 6: Final answer
    x = 1,715.67

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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.