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Finding the Fourth Proportional to 8,922.15, 13,391.93 and 7,450.79

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Solution

The fourth proportional to 8,922.15, 13,391.93 and 7,450.79 is: 11,183.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,922.15 : 13,391.93 = 7,450.79 : x
  2. Step 2: Convert to fraction form
    8,922.15/13,391.93 = 7,450.79/x
  3. Step 3: Cross multiply
    8,922.15x = 13,391.93 × 7,450.79
  4. Step 4: Simplify right side
    8,922.15x = 99,780,409.79
  5. Step 5: Solve for x
    x = 99,780,409.79/8,922.15
  6. Step 6: Final answer
    x = 11,183.45

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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.