Home / 3,115.23-4,298.94-1,789.17

Finding the Fourth Proportional to 3,115.23, 4,298.94 and 1,789.17

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Solution

The fourth proportional to 3,115.23, 4,298.94 and 1,789.17 is: 2,469.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.23 : 4,298.94 = 1,789.17 : x
  2. Step 2: Convert to fraction form
    3,115.23/4,298.94 = 1,789.17/x
  3. Step 3: Cross multiply
    3,115.23x = 4,298.94 × 1,789.17
  4. Step 4: Simplify right side
    3,115.23x = 7,691,534.48
  5. Step 5: Solve for x
    x = 7,691,534.48/3,115.23
  6. Step 6: Final answer
    x = 2,469.01

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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.