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Finding the Fourth Proportional to 2,746.45, 4,120.38 and 798.65

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Solution

The fourth proportional to 2,746.45, 4,120.38 and 798.65 is: 1,198.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.45 : 4,120.38 = 798.65 : x
  2. Step 2: Convert to fraction form
    2,746.45/4,120.38 = 798.65/x
  3. Step 3: Cross multiply
    2,746.45x = 4,120.38 × 798.65
  4. Step 4: Simplify right side
    2,746.45x = 3,290,748.79
  5. Step 5: Solve for x
    x = 3,290,748.79/2,746.45
  6. Step 6: Final answer
    x = 1,198.18

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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.