Home / 8,511.48-12,781.80-6,791.04

Finding the Fourth Proportional to 8,511.48, 12,781.80 and 6,791.04

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Solution

The fourth proportional to 8,511.48, 12,781.80 and 6,791.04 is: 10,198.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.48 : 12,781.80 = 6,791.04 : x
  2. Step 2: Convert to fraction form
    8,511.48/12,781.80 = 6,791.04/x
  3. Step 3: Cross multiply
    8,511.48x = 12,781.80 × 6,791.04
  4. Step 4: Simplify right side
    8,511.48x = 86,801,715.07
  5. Step 5: Solve for x
    x = 86,801,715.07/8,511.48
  6. Step 6: Final answer
    x = 10,198.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.