Home / 5,239.92-7,860.12-4,987.72

Finding the Fourth Proportional to 5,239.92, 7,860.12 and 4,987.72

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Solution

The fourth proportional to 5,239.92, 7,860.12 and 4,987.72 is: 7,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.92 : 7,860.12 = 4,987.72 : x
  2. Step 2: Convert to fraction form
    5,239.92/7,860.12 = 4,987.72/x
  3. Step 3: Cross multiply
    5,239.92x = 7,860.12 × 4,987.72
  4. Step 4: Simplify right side
    5,239.92x = 39,204,077.73
  5. Step 5: Solve for x
    x = 39,204,077.73/5,239.92
  6. Step 6: Final answer
    x = 7,481.81

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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.