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Finding the Fourth Proportional to 8,604.83, 11,879.15 and 6,686.39

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Solution

The fourth proportional to 8,604.83, 11,879.15 and 6,686.39 is: 9,230.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.83 : 11,879.15 = 6,686.39 : x
  2. Step 2: Convert to fraction form
    8,604.83/11,879.15 = 6,686.39/x
  3. Step 3: Cross multiply
    8,604.83x = 11,879.15 × 6,686.39
  4. Step 4: Simplify right side
    8,604.83x = 79,428,536.94
  5. Step 5: Solve for x
    x = 79,428,536.94/8,604.83
  6. Step 6: Final answer
    x = 9,230.70

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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.