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Finding the Fourth Proportional to 8,858.78, 12,225.08 and 4,879.89

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Solution

The fourth proportional to 8,858.78, 12,225.08 and 4,879.89 is: 6,734.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.78 : 12,225.08 = 4,879.89 : x
  2. Step 2: Convert to fraction form
    8,858.78/12,225.08 = 4,879.89/x
  3. Step 3: Cross multiply
    8,858.78x = 12,225.08 × 4,879.89
  4. Step 4: Simplify right side
    8,858.78x = 59,657,021.24
  5. Step 5: Solve for x
    x = 59,657,021.24/8,858.78
  6. Step 6: Final answer
    x = 6,734.23

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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.