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Finding the Fourth Proportional to 2,073.93, 3,110.92 and 613.11

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Solution

The fourth proportional to 2,073.93, 3,110.92 and 613.11 is: 919.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.93 : 3,110.92 = 613.11 : x
  2. Step 2: Convert to fraction form
    2,073.93/3,110.92 = 613.11/x
  3. Step 3: Cross multiply
    2,073.93x = 3,110.92 × 613.11
  4. Step 4: Simplify right side
    2,073.93x = 1,907,336.16
  5. Step 5: Solve for x
    x = 1,907,336.16/2,073.93
  6. Step 6: Final answer
    x = 919.67

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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.