Home / 3,147.07-4,342.97-1,730.78

Finding the Fourth Proportional to 3,147.07, 4,342.97 and 1,730.78

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Solution

The fourth proportional to 3,147.07, 4,342.97 and 1,730.78 is: 2,388.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.07 : 4,342.97 = 1,730.78 : x
  2. Step 2: Convert to fraction form
    3,147.07/4,342.97 = 1,730.78/x
  3. Step 3: Cross multiply
    3,147.07x = 4,342.97 × 1,730.78
  4. Step 4: Simplify right side
    3,147.07x = 7,516,716.96
  5. Step 5: Solve for x
    x = 7,516,716.96/3,147.07
  6. Step 6: Final answer
    x = 2,388.48

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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.