Home / 2,188.64-3,277.20-1,209.80

Finding the Fourth Proportional to 2,188.64, 3,277.20 and 1,209.80

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Solution

The fourth proportional to 2,188.64, 3,277.20 and 1,209.80 is: 1,811.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.64 : 3,277.20 = 1,209.80 : x
  2. Step 2: Convert to fraction form
    2,188.64/3,277.20 = 1,209.80/x
  3. Step 3: Cross multiply
    2,188.64x = 3,277.20 × 1,209.80
  4. Step 4: Simplify right side
    2,188.64x = 3,964,756.56
  5. Step 5: Solve for x
    x = 3,964,756.56/2,188.64
  6. Step 6: Final answer
    x = 1,811.52

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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.