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Finding the Fourth Proportional to 8,784.72, 13,172.40 and 3,852.72

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Solution

The fourth proportional to 8,784.72, 13,172.40 and 3,852.72 is: 5,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.72 : 13,172.40 = 3,852.72 : x
  2. Step 2: Convert to fraction form
    8,784.72/13,172.40 = 3,852.72/x
  3. Step 3: Cross multiply
    8,784.72x = 13,172.40 × 3,852.72
  4. Step 4: Simplify right side
    8,784.72x = 50,749,568.93
  5. Step 5: Solve for x
    x = 50,749,568.93/8,784.72
  6. Step 6: Final answer
    x = 5,777.03

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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.