Home / 4,456.78-6,685.22-1,991.73

Finding the Fourth Proportional to 4,456.78, 6,685.22 and 1,991.73

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Solution

The fourth proportional to 4,456.78, 6,685.22 and 1,991.73 is: 2,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,456.78 : 6,685.22 = 1,991.73 : x
  2. Step 2: Convert to fraction form
    4,456.78/6,685.22 = 1,991.73/x
  3. Step 3: Cross multiply
    4,456.78x = 6,685.22 × 1,991.73
  4. Step 4: Simplify right side
    4,456.78x = 13,315,153.23
  5. Step 5: Solve for x
    x = 13,315,153.23/4,456.78
  6. Step 6: Final answer
    x = 2,987.62

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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.