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Finding the Fourth Proportional to 8,645.46, 11,932.29 and 6,779.22

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Solution

The fourth proportional to 8,645.46, 11,932.29 and 6,779.22 is: 9,356.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,645.46 : 11,932.29 = 6,779.22 : x
  2. Step 2: Convert to fraction form
    8,645.46/11,932.29 = 6,779.22/x
  3. Step 3: Cross multiply
    8,645.46x = 11,932.29 × 6,779.22
  4. Step 4: Simplify right side
    8,645.46x = 80,891,619.01
  5. Step 5: Solve for x
    x = 80,891,619.01/8,645.46
  6. Step 6: Final answer
    x = 9,356.54

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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.