Home / 2,860.92-4,290.42-1,129.56

Finding the Fourth Proportional to 2,860.92, 4,290.42 and 1,129.56

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Solution

The fourth proportional to 2,860.92, 4,290.42 and 1,129.56 is: 1,693.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.92 : 4,290.42 = 1,129.56 : x
  2. Step 2: Convert to fraction form
    2,860.92/4,290.42 = 1,129.56/x
  3. Step 3: Cross multiply
    2,860.92x = 4,290.42 × 1,129.56
  4. Step 4: Simplify right side
    2,860.92x = 4,846,286.82
  5. Step 5: Solve for x
    x = 4,846,286.82/2,860.92
  6. Step 6: Final answer
    x = 1,693.96

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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.