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Finding the Fourth Proportional to 6,268.80, 8,650.80 and 3,615.84

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Solution

The fourth proportional to 6,268.80, 8,650.80 and 3,615.84 is: 4,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,268.80 : 8,650.80 = 3,615.84 : x
  2. Step 2: Convert to fraction form
    6,268.80/8,650.80 = 3,615.84/x
  3. Step 3: Cross multiply
    6,268.80x = 8,650.80 × 3,615.84
  4. Step 4: Simplify right side
    6,268.80x = 31,279,908.67
  5. Step 5: Solve for x
    x = 31,279,908.67/6,268.80
  6. Step 6: Final answer
    x = 4,989.78

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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.