Home / 8,215.08-11,338.83-6,886.68

Finding the Fourth Proportional to 8,215.08, 11,338.83 and 6,886.68

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Solution

The fourth proportional to 8,215.08, 11,338.83 and 6,886.68 is: 9,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.08 : 11,338.83 = 6,886.68 : x
  2. Step 2: Convert to fraction form
    8,215.08/11,338.83 = 6,886.68/x
  3. Step 3: Cross multiply
    8,215.08x = 11,338.83 × 6,886.68
  4. Step 4: Simplify right side
    8,215.08x = 78,086,893.78
  5. Step 5: Solve for x
    x = 78,086,893.78/8,215.08
  6. Step 6: Final answer
    x = 9,505.31

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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.