Home / 8,654.13-12,979.66-3,969.09

Finding the Fourth Proportional to 8,654.13, 12,979.66 and 3,969.09

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Solution

The fourth proportional to 8,654.13, 12,979.66 and 3,969.09 is: 5,952.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.13 : 12,979.66 = 3,969.09 : x
  2. Step 2: Convert to fraction form
    8,654.13/12,979.66 = 3,969.09/x
  3. Step 3: Cross multiply
    8,654.13x = 12,979.66 × 3,969.09
  4. Step 4: Simplify right side
    8,654.13x = 51,517,438.71
  5. Step 5: Solve for x
    x = 51,517,438.71/8,654.13
  6. Step 6: Final answer
    x = 5,952.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.