Home / 8,386.26-11,626.82-7,919.70

Finding the Fourth Proportional to 8,386.26, 11,626.82 and 7,919.70

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Solution

The fourth proportional to 8,386.26, 11,626.82 and 7,919.70 is: 10,979.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.26 : 11,626.82 = 7,919.70 : x
  2. Step 2: Convert to fraction form
    8,386.26/11,626.82 = 7,919.70/x
  3. Step 3: Cross multiply
    8,386.26x = 11,626.82 × 7,919.70
  4. Step 4: Simplify right side
    8,386.26x = 92,080,886.76
  5. Step 5: Solve for x
    x = 92,080,886.76/8,386.26
  6. Step 6: Final answer
    x = 10,979.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.