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Finding the Fourth Proportional to 8,497.78, 12,756.39 and 8,011.78

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Solution

The fourth proportional to 8,497.78, 12,756.39 and 8,011.78 is: 12,026.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,497.78 : 12,756.39 = 8,011.78 : x
  2. Step 2: Convert to fraction form
    8,497.78/12,756.39 = 8,011.78/x
  3. Step 3: Cross multiply
    8,497.78x = 12,756.39 × 8,011.78
  4. Step 4: Simplify right side
    8,497.78x = 102,201,390.27
  5. Step 5: Solve for x
    x = 102,201,390.27/8,497.78
  6. Step 6: Final answer
    x = 12,026.83

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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.