Home / 2,785.20-4,177.71-705.27

Finding the Fourth Proportional to 2,785.20, 4,177.71 and 705.27

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Solution

The fourth proportional to 2,785.20, 4,177.71 and 705.27 is: 1,057.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.20 : 4,177.71 = 705.27 : x
  2. Step 2: Convert to fraction form
    2,785.20/4,177.71 = 705.27/x
  3. Step 3: Cross multiply
    2,785.20x = 4,177.71 × 705.27
  4. Step 4: Simplify right side
    2,785.20x = 2,946,413.53
  5. Step 5: Solve for x
    x = 2,946,413.53/2,785.20
  6. Step 6: Final answer
    x = 1,057.88

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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.