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Finding the Fourth Proportional to 8,858.78, 12,224.96 and 4,879.86

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Solution

The fourth proportional to 8,858.78, 12,224.96 and 4,879.86 is: 6,734.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.78 : 12,224.96 = 4,879.86 : x
  2. Step 2: Convert to fraction form
    8,858.78/12,224.96 = 4,879.86/x
  3. Step 3: Cross multiply
    8,858.78x = 12,224.96 × 4,879.86
  4. Step 4: Simplify right side
    8,858.78x = 59,656,041.36
  5. Step 5: Solve for x
    x = 59,656,041.36/8,858.78
  6. Step 6: Final answer
    x = 6,734.12

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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.