Home / 8,819.35-12,170.70-5,284.61

Finding the Fourth Proportional to 8,819.35, 12,170.70 and 5,284.61

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Solution

The fourth proportional to 8,819.35, 12,170.70 and 5,284.61 is: 7,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.35 : 12,170.70 = 5,284.61 : x
  2. Step 2: Convert to fraction form
    8,819.35/12,170.70 = 5,284.61/x
  3. Step 3: Cross multiply
    8,819.35x = 12,170.70 × 5,284.61
  4. Step 4: Simplify right side
    8,819.35x = 64,317,342.07
  5. Step 5: Solve for x
    x = 64,317,342.07/8,819.35
  6. Step 6: Final answer
    x = 7,292.76

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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.