Home / 2,865.66-4,298.78-1,305.75

Finding the Fourth Proportional to 2,865.66, 4,298.78 and 1,305.75

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Solution

The fourth proportional to 2,865.66, 4,298.78 and 1,305.75 is: 1,958.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.66 : 4,298.78 = 1,305.75 : x
  2. Step 2: Convert to fraction form
    2,865.66/4,298.78 = 1,305.75/x
  3. Step 3: Cross multiply
    2,865.66x = 4,298.78 × 1,305.75
  4. Step 4: Simplify right side
    2,865.66x = 5,613,131.99
  5. Step 5: Solve for x
    x = 5,613,131.99/2,865.66
  6. Step 6: Final answer
    x = 1,958.76

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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.