Home / 8,206.31-11,291.91-7,976.68

Finding the Fourth Proportional to 8,206.31, 11,291.91 and 7,976.68

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Solution

The fourth proportional to 8,206.31, 11,291.91 and 7,976.68 is: 10,975.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,206.31 : 11,291.91 = 7,976.68 : x
  2. Step 2: Convert to fraction form
    8,206.31/11,291.91 = 7,976.68/x
  3. Step 3: Cross multiply
    8,206.31x = 11,291.91 × 7,976.68
  4. Step 4: Simplify right side
    8,206.31x = 90,071,894.52
  5. Step 5: Solve for x
    x = 90,071,894.52/8,206.31
  6. Step 6: Final answer
    x = 10,975.93

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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.