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Finding the Fourth Proportional to 2,746.20, 4,119.28 and 798.40

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Solution

The fourth proportional to 2,746.20, 4,119.28 and 798.40 is: 1,197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.20 : 4,119.28 = 798.40 : x
  2. Step 2: Convert to fraction form
    2,746.20/4,119.28 = 798.40/x
  3. Step 3: Cross multiply
    2,746.20x = 4,119.28 × 798.40
  4. Step 4: Simplify right side
    2,746.20x = 3,288,833.15
  5. Step 5: Solve for x
    x = 3,288,833.15/2,746.20
  6. Step 6: Final answer
    x = 1,197.59

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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.