Home / 5,216.30-7,819.70-1,928.56

Finding the Fourth Proportional to 5,216.30, 7,819.70 and 1,928.56

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Solution

The fourth proportional to 5,216.30, 7,819.70 and 1,928.56 is: 2,891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.30 : 7,819.70 = 1,928.56 : x
  2. Step 2: Convert to fraction form
    5,216.30/7,819.70 = 1,928.56/x
  3. Step 3: Cross multiply
    5,216.30x = 7,819.70 × 1,928.56
  4. Step 4: Simplify right side
    5,216.30x = 15,080,760.63
  5. Step 5: Solve for x
    x = 15,080,760.63/5,216.30
  6. Step 6: Final answer
    x = 2,891.08

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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.