Home / 3,135.82-4,330.36-2,018.70

Finding the Fourth Proportional to 3,135.82, 4,330.36 and 2,018.70

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Solution

The fourth proportional to 3,135.82, 4,330.36 and 2,018.70 is: 2,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.82 : 4,330.36 = 2,018.70 : x
  2. Step 2: Convert to fraction form
    3,135.82/4,330.36 = 2,018.70/x
  3. Step 3: Cross multiply
    3,135.82x = 4,330.36 × 2,018.70
  4. Step 4: Simplify right side
    3,135.82x = 8,741,700.26
  5. Step 5: Solve for x
    x = 8,741,700.26/3,135.82
  6. Step 6: Final answer
    x = 2,787.69

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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.