Home / 5,213.14-7,819.84-1,515.40

Finding the Fourth Proportional to 5,213.14, 7,819.84 and 1,515.40

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Solution

The fourth proportional to 5,213.14, 7,819.84 and 1,515.40 is: 2,273.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.14 : 7,819.84 = 1,515.40 : x
  2. Step 2: Convert to fraction form
    5,213.14/7,819.84 = 1,515.40/x
  3. Step 3: Cross multiply
    5,213.14x = 7,819.84 × 1,515.40
  4. Step 4: Simplify right side
    5,213.14x = 11,850,185.54
  5. Step 5: Solve for x
    x = 11,850,185.54/5,213.14
  6. Step 6: Final answer
    x = 2,273.14

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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.