Home / 8,279.07-12,421.68-3,838.89

Finding the Fourth Proportional to 8,279.07, 12,421.68 and 3,838.89

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Solution

The fourth proportional to 8,279.07, 12,421.68 and 3,838.89 is: 5,759.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.07 : 12,421.68 = 3,838.89 : x
  2. Step 2: Convert to fraction form
    8,279.07/12,421.68 = 3,838.89/x
  3. Step 3: Cross multiply
    8,279.07x = 12,421.68 × 3,838.89
  4. Step 4: Simplify right side
    8,279.07x = 47,685,463.14
  5. Step 5: Solve for x
    x = 47,685,463.14/8,279.07
  6. Step 6: Final answer
    x = 5,759.76

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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.