Home / 4,987.82-7,481.87-1,239.45

Finding the Fourth Proportional to 4,987.82, 7,481.87 and 1,239.45

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Solution

The fourth proportional to 4,987.82, 7,481.87 and 1,239.45 is: 1,859.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.82 : 7,481.87 = 1,239.45 : x
  2. Step 2: Convert to fraction form
    4,987.82/7,481.87 = 1,239.45/x
  3. Step 3: Cross multiply
    4,987.82x = 7,481.87 × 1,239.45
  4. Step 4: Simplify right side
    4,987.82x = 9,273,410.97
  5. Step 5: Solve for x
    x = 9,273,410.97/4,987.82
  6. Step 6: Final answer
    x = 1,859.21

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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.