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Finding the Fourth Proportional to 6,185.80, 8,536.80 and 4,086.28

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Solution

The fourth proportional to 6,185.80, 8,536.80 and 4,086.28 is: 5,639.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,185.80 : 8,536.80 = 4,086.28 : x
  2. Step 2: Convert to fraction form
    6,185.80/8,536.80 = 4,086.28/x
  3. Step 3: Cross multiply
    6,185.80x = 8,536.80 × 4,086.28
  4. Step 4: Simplify right side
    6,185.80x = 34,883,755.10
  5. Step 5: Solve for x
    x = 34,883,755.10/6,185.80
  6. Step 6: Final answer
    x = 5,639.33

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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.