Home / 2,438.20-3,656.40-794.80

Finding the Fourth Proportional to 2,438.20, 3,656.40 and 794.80

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Solution

The fourth proportional to 2,438.20, 3,656.40 and 794.80 is: 1,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.20 : 3,656.40 = 794.80 : x
  2. Step 2: Convert to fraction form
    2,438.20/3,656.40 = 794.80/x
  3. Step 3: Cross multiply
    2,438.20x = 3,656.40 × 794.80
  4. Step 4: Simplify right side
    2,438.20x = 2,906,106.72
  5. Step 5: Solve for x
    x = 2,906,106.72/2,438.20
  6. Step 6: Final answer
    x = 1,191.91

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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.