Home / 2,794.50-4,191.20-1,387.45

Finding the Fourth Proportional to 2,794.50, 4,191.20 and 1,387.45

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Solution

The fourth proportional to 2,794.50, 4,191.20 and 1,387.45 is: 2,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.50 : 4,191.20 = 1,387.45 : x
  2. Step 2: Convert to fraction form
    2,794.50/4,191.20 = 1,387.45/x
  3. Step 3: Cross multiply
    2,794.50x = 4,191.20 × 1,387.45
  4. Step 4: Simplify right side
    2,794.50x = 5,815,073.50
  5. Step 5: Solve for x
    x = 5,815,073.50/2,794.50
  6. Step 6: Final answer
    x = 2,080.90

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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.