Home / 3,086.96-4,260.06-1,689.68

Finding the Fourth Proportional to 3,086.96, 4,260.06 and 1,689.68

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Solution

The fourth proportional to 3,086.96, 4,260.06 and 1,689.68 is: 2,331.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.96 : 4,260.06 = 1,689.68 : x
  2. Step 2: Convert to fraction form
    3,086.96/4,260.06 = 1,689.68/x
  3. Step 3: Cross multiply
    3,086.96x = 4,260.06 × 1,689.68
  4. Step 4: Simplify right side
    3,086.96x = 7,198,138.18
  5. Step 5: Solve for x
    x = 7,198,138.18/3,086.96
  6. Step 6: Final answer
    x = 2,331.79

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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.