Home / 8,780.22-12,121.11-6,786.27

Finding the Fourth Proportional to 8,780.22, 12,121.11 and 6,786.27

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Solution

The fourth proportional to 8,780.22, 12,121.11 and 6,786.27 is: 9,368.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.22 : 12,121.11 = 6,786.27 : x
  2. Step 2: Convert to fraction form
    8,780.22/12,121.11 = 6,786.27/x
  3. Step 3: Cross multiply
    8,780.22x = 12,121.11 × 6,786.27
  4. Step 4: Simplify right side
    8,780.22x = 82,257,125.16
  5. Step 5: Solve for x
    x = 82,257,125.16/8,780.22
  6. Step 6: Final answer
    x = 9,368.46

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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.