Home / 8,861.78-12,212.44-6,339.52

Finding the Fourth Proportional to 8,861.78, 12,212.44 and 6,339.52

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Solution

The fourth proportional to 8,861.78, 12,212.44 and 6,339.52 is: 8,736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.78 : 12,212.44 = 6,339.52 : x
  2. Step 2: Convert to fraction form
    8,861.78/12,212.44 = 6,339.52/x
  3. Step 3: Cross multiply
    8,861.78x = 12,212.44 × 6,339.52
  4. Step 4: Simplify right side
    8,861.78x = 77,420,914.87
  5. Step 5: Solve for x
    x = 77,420,914.87/8,861.78
  6. Step 6: Final answer
    x = 8,736.50

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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.