Home / 6,686.83-9,225.70-3,891.79

Finding the Fourth Proportional to 6,686.83, 9,225.70 and 3,891.79

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Solution

The fourth proportional to 6,686.83, 9,225.70 and 3,891.79 is: 5,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.83 : 9,225.70 = 3,891.79 : x
  2. Step 2: Convert to fraction form
    6,686.83/9,225.70 = 3,891.79/x
  3. Step 3: Cross multiply
    6,686.83x = 9,225.70 × 3,891.79
  4. Step 4: Simplify right side
    6,686.83x = 35,904,487.00
  5. Step 5: Solve for x
    x = 35,904,487.00/6,686.83
  6. Step 6: Final answer
    x = 5,369.43

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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.