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Finding the Fourth Proportional to 8,756.52, 13,134.78 and 2,913.12

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Solution

The fourth proportional to 8,756.52, 13,134.78 and 2,913.12 is: 4,369.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.52 : 13,134.78 = 2,913.12 : x
  2. Step 2: Convert to fraction form
    8,756.52/13,134.78 = 2,913.12/x
  3. Step 3: Cross multiply
    8,756.52x = 13,134.78 × 2,913.12
  4. Step 4: Simplify right side
    8,756.52x = 38,263,190.31
  5. Step 5: Solve for x
    x = 38,263,190.31/8,756.52
  6. Step 6: Final answer
    x = 4,369.68

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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.