Home / 3,147.89-4,344.91-2,152.80

Finding the Fourth Proportional to 3,147.89, 4,344.91 and 2,152.80

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Solution

The fourth proportional to 3,147.89, 4,344.91 and 2,152.80 is: 2,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.89 : 4,344.91 = 2,152.80 : x
  2. Step 2: Convert to fraction form
    3,147.89/4,344.91 = 2,152.80/x
  3. Step 3: Cross multiply
    3,147.89x = 4,344.91 × 2,152.80
  4. Step 4: Simplify right side
    3,147.89x = 9,353,716.87
  5. Step 5: Solve for x
    x = 9,353,716.87/3,147.89
  6. Step 6: Final answer
    x = 2,971.43

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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.