Home / 4,455.78-6,683.72-1,990.73

Finding the Fourth Proportional to 4,455.78, 6,683.72 and 1,990.73

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Solution

The fourth proportional to 4,455.78, 6,683.72 and 1,990.73 is: 2,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,455.78 : 6,683.72 = 1,990.73 : x
  2. Step 2: Convert to fraction form
    4,455.78/6,683.72 = 1,990.73/x
  3. Step 3: Cross multiply
    4,455.78x = 6,683.72 × 1,990.73
  4. Step 4: Simplify right side
    4,455.78x = 13,305,438.54
  5. Step 5: Solve for x
    x = 13,305,438.54/4,455.78
  6. Step 6: Final answer
    x = 2,986.11

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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.