Home / 5,149.39-7,105.88-2,911.13

Finding the Fourth Proportional to 5,149.39, 7,105.88 and 2,911.13

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Solution

The fourth proportional to 5,149.39, 7,105.88 and 2,911.13 is: 4,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.39 : 7,105.88 = 2,911.13 : x
  2. Step 2: Convert to fraction form
    5,149.39/7,105.88 = 2,911.13/x
  3. Step 3: Cross multiply
    5,149.39x = 7,105.88 × 2,911.13
  4. Step 4: Simplify right side
    5,149.39x = 20,686,140.44
  5. Step 5: Solve for x
    x = 20,686,140.44/5,149.39
  6. Step 6: Final answer
    x = 4,017.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.