Home / 2,819.84-3,888.99-2,113.34

Finding the Fourth Proportional to 2,819.84, 3,888.99 and 2,113.34

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Solution

The fourth proportional to 2,819.84, 3,888.99 and 2,113.34 is: 2,914.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.84 : 3,888.99 = 2,113.34 : x
  2. Step 2: Convert to fraction form
    2,819.84/3,888.99 = 2,113.34/x
  3. Step 3: Cross multiply
    2,819.84x = 3,888.99 × 2,113.34
  4. Step 4: Simplify right side
    2,819.84x = 8,218,738.68
  5. Step 5: Solve for x
    x = 8,218,738.68/2,819.84
  6. Step 6: Final answer
    x = 2,914.62

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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.