Home / 2,856.15-3,942.14-1,859.69

Finding the Fourth Proportional to 2,856.15, 3,942.14 and 1,859.69

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Solution

The fourth proportional to 2,856.15, 3,942.14 and 1,859.69 is: 2,566.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.15 : 3,942.14 = 1,859.69 : x
  2. Step 2: Convert to fraction form
    2,856.15/3,942.14 = 1,859.69/x
  3. Step 3: Cross multiply
    2,856.15x = 3,942.14 × 1,859.69
  4. Step 4: Simplify right side
    2,856.15x = 7,331,129.33
  5. Step 5: Solve for x
    x = 7,331,129.33/2,856.15
  6. Step 6: Final answer
    x = 2,566.79

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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.