Home / 2,909.80-4,365.78-1,179.64

Finding the Fourth Proportional to 2,909.80, 4,365.78 and 1,179.64

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Solution

The fourth proportional to 2,909.80, 4,365.78 and 1,179.64 is: 1,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.80 : 4,365.78 = 1,179.64 : x
  2. Step 2: Convert to fraction form
    2,909.80/4,365.78 = 1,179.64/x
  3. Step 3: Cross multiply
    2,909.80x = 4,365.78 × 1,179.64
  4. Step 4: Simplify right side
    2,909.80x = 5,150,048.72
  5. Step 5: Solve for x
    x = 5,150,048.72/2,909.80
  6. Step 6: Final answer
    x = 1,769.90

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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.