Home / 8,712.72-13,043.16-5,239.44

Finding the Fourth Proportional to 8,712.72, 13,043.16 and 5,239.44

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Solution

The fourth proportional to 8,712.72, 13,043.16 and 5,239.44 is: 7,843.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.72 : 13,043.16 = 5,239.44 : x
  2. Step 2: Convert to fraction form
    8,712.72/13,043.16 = 5,239.44/x
  3. Step 3: Cross multiply
    8,712.72x = 13,043.16 × 5,239.44
  4. Step 4: Simplify right side
    8,712.72x = 68,338,854.23
  5. Step 5: Solve for x
    x = 68,338,854.23/8,712.72
  6. Step 6: Final answer
    x = 7,843.57

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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.