Home / 8,279.45-11,425.64-4,742.68

Finding the Fourth Proportional to 8,279.45, 11,425.64 and 4,742.68

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Solution

The fourth proportional to 8,279.45, 11,425.64 and 4,742.68 is: 6,544.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.45 : 11,425.64 = 4,742.68 : x
  2. Step 2: Convert to fraction form
    8,279.45/11,425.64 = 4,742.68/x
  3. Step 3: Cross multiply
    8,279.45x = 11,425.64 × 4,742.68
  4. Step 4: Simplify right side
    8,279.45x = 54,188,102.04
  5. Step 5: Solve for x
    x = 54,188,102.04/8,279.45
  6. Step 6: Final answer
    x = 6,544.89

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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.