Home / 3,985.32-5,979.94-2,822.80

Finding the Fourth Proportional to 3,985.32, 5,979.94 and 2,822.80

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Solution

The fourth proportional to 3,985.32, 5,979.94 and 2,822.80 is: 4,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.32 : 5,979.94 = 2,822.80 : x
  2. Step 2: Convert to fraction form
    3,985.32/5,979.94 = 2,822.80/x
  3. Step 3: Cross multiply
    3,985.32x = 5,979.94 × 2,822.80
  4. Step 4: Simplify right side
    3,985.32x = 16,880,174.63
  5. Step 5: Solve for x
    x = 16,880,174.63/3,985.32
  6. Step 6: Final answer
    x = 4,235.59

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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.