Home / 5,215.56-7,819.68-1,928.22

Finding the Fourth Proportional to 5,215.56, 7,819.68 and 1,928.22

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Solution

The fourth proportional to 5,215.56, 7,819.68 and 1,928.22 is: 2,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.56 : 7,819.68 = 1,928.22 : x
  2. Step 2: Convert to fraction form
    5,215.56/7,819.68 = 1,928.22/x
  3. Step 3: Cross multiply
    5,215.56x = 7,819.68 × 1,928.22
  4. Step 4: Simplify right side
    5,215.56x = 15,078,063.37
  5. Step 5: Solve for x
    x = 15,078,063.37/5,215.56
  6. Step 6: Final answer
    x = 2,890.98

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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.