Home / 3,185.12-4,395.47-1,787.88

Finding the Fourth Proportional to 3,185.12, 4,395.47 and 1,787.88

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Solution

The fourth proportional to 3,185.12, 4,395.47 and 1,787.88 is: 2,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.12 : 4,395.47 = 1,787.88 : x
  2. Step 2: Convert to fraction form
    3,185.12/4,395.47 = 1,787.88/x
  3. Step 3: Cross multiply
    3,185.12x = 4,395.47 × 1,787.88
  4. Step 4: Simplify right side
    3,185.12x = 7,858,572.90
  5. Step 5: Solve for x
    x = 7,858,572.90/3,185.12
  6. Step 6: Final answer
    x = 2,467.28

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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.