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Finding the Fourth Proportional to 8,615.37, 12,928.07 and 3,354.02

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Solution

The fourth proportional to 8,615.37, 12,928.07 and 3,354.02 is: 5,032.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.37 : 12,928.07 = 3,354.02 : x
  2. Step 2: Convert to fraction form
    8,615.37/12,928.07 = 3,354.02/x
  3. Step 3: Cross multiply
    8,615.37x = 12,928.07 × 3,354.02
  4. Step 4: Simplify right side
    8,615.37x = 43,360,923.93
  5. Step 5: Solve for x
    x = 43,360,923.93/8,615.37
  6. Step 6: Final answer
    x = 5,032.97

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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.