Home / 2,789.60-4,184.40-737.60

Finding the Fourth Proportional to 2,789.60, 4,184.40 and 737.60

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Solution

The fourth proportional to 2,789.60, 4,184.40 and 737.60 is: 1,106.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.60 : 4,184.40 = 737.60 : x
  2. Step 2: Convert to fraction form
    2,789.60/4,184.40 = 737.60/x
  3. Step 3: Cross multiply
    2,789.60x = 4,184.40 × 737.60
  4. Step 4: Simplify right side
    2,789.60x = 3,086,413.44
  5. Step 5: Solve for x
    x = 3,086,413.44/2,789.60
  6. Step 6: Final answer
    x = 1,106.40

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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.