Home / 7,819.84-11,731.58-2,555.09

Finding the Fourth Proportional to 7,819.84, 11,731.58 and 2,555.09

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Solution

The fourth proportional to 7,819.84, 11,731.58 and 2,555.09 is: 3,833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.84 : 11,731.58 = 2,555.09 : x
  2. Step 2: Convert to fraction form
    7,819.84/11,731.58 = 2,555.09/x
  3. Step 3: Cross multiply
    7,819.84x = 11,731.58 × 2,555.09
  4. Step 4: Simplify right side
    7,819.84x = 29,975,305.25
  5. Step 5: Solve for x
    x = 29,975,305.25/7,819.84
  6. Step 6: Final answer
    x = 3,833.24

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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.