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Finding the Fourth Proportional to 6,686.66, 9,227.61 and 3,661.77

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Solution

The fourth proportional to 6,686.66, 9,227.61 and 3,661.77 is: 5,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.66 : 9,227.61 = 3,661.77 : x
  2. Step 2: Convert to fraction form
    6,686.66/9,227.61 = 3,661.77/x
  3. Step 3: Cross multiply
    6,686.66x = 9,227.61 × 3,661.77
  4. Step 4: Simplify right side
    6,686.66x = 33,789,367.16
  5. Step 5: Solve for x
    x = 33,789,367.16/6,686.66
  6. Step 6: Final answer
    x = 5,053.25

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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.