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Finding the Fourth Proportional to 9,362.42, 12,922.02 and 8,615.20

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Solution

The fourth proportional to 9,362.42, 12,922.02 and 8,615.20 is: 11,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.42 : 12,922.02 = 8,615.20 : x
  2. Step 2: Convert to fraction form
    9,362.42/12,922.02 = 8,615.20/x
  3. Step 3: Cross multiply
    9,362.42x = 12,922.02 × 8,615.20
  4. Step 4: Simplify right side
    9,362.42x = 111,325,786.70
  5. Step 5: Solve for x
    x = 111,325,786.70/9,362.42
  6. Step 6: Final answer
    x = 11,890.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.