Home / 3,012-4,156.56-1,965.84

Finding the Fourth Proportional to 3,012, 4,156.56 and 1,965.84

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Solution

The fourth proportional to 3,012, 4,156.56 and 1,965.84 is: 2,712.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012 : 4,156.56 = 1,965.84 : x
  2. Step 2: Convert to fraction form
    3,012/4,156.56 = 1,965.84/x
  3. Step 3: Cross multiply
    3,012x = 4,156.56 × 1,965.84
  4. Step 4: Simplify right side
    3,012x = 8,171,131.91
  5. Step 5: Solve for x
    x = 8,171,131.91/3,012
  6. Step 6: Final answer
    x = 2,712.86

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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.