Home / 5,215.60-7,824.08-1,704.38

Finding the Fourth Proportional to 5,215.60, 7,824.08 and 1,704.38

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Solution

The fourth proportional to 5,215.60, 7,824.08 and 1,704.38 is: 2,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.60 : 7,824.08 = 1,704.38 : x
  2. Step 2: Convert to fraction form
    5,215.60/7,824.08 = 1,704.38/x
  3. Step 3: Cross multiply
    5,215.60x = 7,824.08 × 1,704.38
  4. Step 4: Simplify right side
    5,215.60x = 13,335,205.47
  5. Step 5: Solve for x
    x = 13,335,205.47/5,215.60
  6. Step 6: Final answer
    x = 2,556.79

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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.