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Finding the Fourth Proportional to 8,655.86, 11,946.14 and 4,879.76

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Solution

The fourth proportional to 8,655.86, 11,946.14 and 4,879.76 is: 6,734.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.86 : 11,946.14 = 4,879.76 : x
  2. Step 2: Convert to fraction form
    8,655.86/11,946.14 = 4,879.76/x
  3. Step 3: Cross multiply
    8,655.86x = 11,946.14 × 4,879.76
  4. Step 4: Simplify right side
    8,655.86x = 58,294,230.30
  5. Step 5: Solve for x
    x = 58,294,230.30/8,655.86
  6. Step 6: Final answer
    x = 6,734.65

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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.