Home / 3,111.62-4,294.45-1,785.46

Finding the Fourth Proportional to 3,111.62, 4,294.45 and 1,785.46

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Solution

The fourth proportional to 3,111.62, 4,294.45 and 1,785.46 is: 2,464.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.62 : 4,294.45 = 1,785.46 : x
  2. Step 2: Convert to fraction form
    3,111.62/4,294.45 = 1,785.46/x
  3. Step 3: Cross multiply
    3,111.62x = 4,294.45 × 1,785.46
  4. Step 4: Simplify right side
    3,111.62x = 7,667,568.70
  5. Step 5: Solve for x
    x = 7,667,568.70/3,111.62
  6. Step 6: Final answer
    x = 2,464.17

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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.