Home / 8,819.91-12,169.58-5,091.75

Finding the Fourth Proportional to 8,819.91, 12,169.58 and 5,091.75

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Solution

The fourth proportional to 8,819.91, 12,169.58 and 5,091.75 is: 7,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,819.91 : 12,169.58 = 5,091.75 : x
  2. Step 2: Convert to fraction form
    8,819.91/12,169.58 = 5,091.75/x
  3. Step 3: Cross multiply
    8,819.91x = 12,169.58 × 5,091.75
  4. Step 4: Simplify right side
    8,819.91x = 61,964,433.51
  5. Step 5: Solve for x
    x = 61,964,433.51/8,819.91
  6. Step 6: Final answer
    x = 7,025.52

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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.