Home / 8,145.33-11,249.76-5,488.13

Finding the Fourth Proportional to 8,145.33, 11,249.76 and 5,488.13

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Solution

The fourth proportional to 8,145.33, 11,249.76 and 5,488.13 is: 7,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.33 : 11,249.76 = 5,488.13 : x
  2. Step 2: Convert to fraction form
    8,145.33/11,249.76 = 5,488.13/x
  3. Step 3: Cross multiply
    8,145.33x = 11,249.76 × 5,488.13
  4. Step 4: Simplify right side
    8,145.33x = 61,740,109.68
  5. Step 5: Solve for x
    x = 61,740,109.68/8,145.33
  6. Step 6: Final answer
    x = 7,579.82

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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.