Home / 3,142.24-4,335.84-1,815.64

Finding the Fourth Proportional to 3,142.24, 4,335.84 and 1,815.64

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Solution

The fourth proportional to 3,142.24, 4,335.84 and 1,815.64 is: 2,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,142.24 : 4,335.84 = 1,815.64 : x
  2. Step 2: Convert to fraction form
    3,142.24/4,335.84 = 1,815.64/x
  3. Step 3: Cross multiply
    3,142.24x = 4,335.84 × 1,815.64
  4. Step 4: Simplify right side
    3,142.24x = 7,872,324.54
  5. Step 5: Solve for x
    x = 7,872,324.54/3,142.24
  6. Step 6: Final answer
    x = 2,505.32

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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.