Home / 3,556.28-5,336.80-1,247.78

Finding the Fourth Proportional to 3,556.28, 5,336.80 and 1,247.78

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Solution

The fourth proportional to 3,556.28, 5,336.80 and 1,247.78 is: 1,872.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,556.28 : 5,336.80 = 1,247.78 : x
  2. Step 2: Convert to fraction form
    3,556.28/5,336.80 = 1,247.78/x
  3. Step 3: Cross multiply
    3,556.28x = 5,336.80 × 1,247.78
  4. Step 4: Simplify right side
    3,556.28x = 6,659,152.30
  5. Step 5: Solve for x
    x = 6,659,152.30/3,556.28
  6. Step 6: Final answer
    x = 1,872.51

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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.