Home / 2,285.87-3,155.09-1,447.38

Finding the Fourth Proportional to 2,285.87, 3,155.09 and 1,447.38

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Solution

The fourth proportional to 2,285.87, 3,155.09 and 1,447.38 is: 1,997.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.87 : 3,155.09 = 1,447.38 : x
  2. Step 2: Convert to fraction form
    2,285.87/3,155.09 = 1,447.38/x
  3. Step 3: Cross multiply
    2,285.87x = 3,155.09 × 1,447.38
  4. Step 4: Simplify right side
    2,285.87x = 4,566,606.93
  5. Step 5: Solve for x
    x = 4,566,606.93/2,285.87
  6. Step 6: Final answer
    x = 1,997.76

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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.