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Finding the Fourth Proportional to 7,622.51, 11,435.81 and 3,922.72

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Solution

The fourth proportional to 7,622.51, 11,435.81 and 3,922.72 is: 5,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.51 : 11,435.81 = 3,922.72 : x
  2. Step 2: Convert to fraction form
    7,622.51/11,435.81 = 3,922.72/x
  3. Step 3: Cross multiply
    7,622.51x = 11,435.81 × 3,922.72
  4. Step 4: Simplify right side
    7,622.51x = 44,859,480.60
  5. Step 5: Solve for x
    x = 44,859,480.60/7,622.51
  6. Step 6: Final answer
    x = 5,885.13

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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.