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Finding the Fourth Proportional to 6,296.80, 8,689.80 and 3,608.48

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Solution

The fourth proportional to 6,296.80, 8,689.80 and 3,608.48 is: 4,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,296.80 : 8,689.80 = 3,608.48 : x
  2. Step 2: Convert to fraction form
    6,296.80/8,689.80 = 3,608.48/x
  3. Step 3: Cross multiply
    6,296.80x = 8,689.80 × 3,608.48
  4. Step 4: Simplify right side
    6,296.80x = 31,356,969.50
  5. Step 5: Solve for x
    x = 31,356,969.50/6,296.80
  6. Step 6: Final answer
    x = 4,979.83

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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.