Home / 8,279.67-11,421.36-5,249.19

Finding the Fourth Proportional to 8,279.67, 11,421.36 and 5,249.19

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Solution

The fourth proportional to 8,279.67, 11,421.36 and 5,249.19 is: 7,240.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.67 : 11,421.36 = 5,249.19 : x
  2. Step 2: Convert to fraction form
    8,279.67/11,421.36 = 5,249.19/x
  3. Step 3: Cross multiply
    8,279.67x = 11,421.36 × 5,249.19
  4. Step 4: Simplify right side
    8,279.67x = 59,952,888.70
  5. Step 5: Solve for x
    x = 59,952,888.70/8,279.67
  6. Step 6: Final answer
    x = 7,240.98

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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.