Home / 8,270.30-11,389.92-6,860.09

Finding the Fourth Proportional to 8,270.30, 11,389.92 and 6,860.09

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Solution

The fourth proportional to 8,270.30, 11,389.92 and 6,860.09 is: 9,447.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,270.30 : 11,389.92 = 6,860.09 : x
  2. Step 2: Convert to fraction form
    8,270.30/11,389.92 = 6,860.09/x
  3. Step 3: Cross multiply
    8,270.30x = 11,389.92 × 6,860.09
  4. Step 4: Simplify right side
    8,270.30x = 78,135,879.04
  5. Step 5: Solve for x
    x = 78,135,879.04/8,270.30
  6. Step 6: Final answer
    x = 9,447.77

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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.