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Finding the Fourth Proportional to 8,656.61, 11,946.08 and 4,879.60

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Solution

The fourth proportional to 8,656.61, 11,946.08 and 4,879.60 is: 6,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,656.61 : 11,946.08 = 4,879.60 : x
  2. Step 2: Convert to fraction form
    8,656.61/11,946.08 = 4,879.60/x
  3. Step 3: Cross multiply
    8,656.61x = 11,946.08 × 4,879.60
  4. Step 4: Simplify right side
    8,656.61x = 58,292,074.30
  5. Step 5: Solve for x
    x = 58,292,074.30/8,656.61
  6. Step 6: Final answer
    x = 6,733.83

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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.