Home / 4,987.49-7,481.21-1,289.73

Finding the Fourth Proportional to 4,987.49, 7,481.21 and 1,289.73

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Solution

The fourth proportional to 4,987.49, 7,481.21 and 1,289.73 is: 1,934.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.49 : 7,481.21 = 1,289.73 : x
  2. Step 2: Convert to fraction form
    4,987.49/7,481.21 = 1,289.73/x
  3. Step 3: Cross multiply
    4,987.49x = 7,481.21 × 1,289.73
  4. Step 4: Simplify right side
    4,987.49x = 9,648,734.52
  5. Step 5: Solve for x
    x = 9,648,734.52/4,987.49
  6. Step 6: Final answer
    x = 1,934.59

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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.