Home / 3,943.65-5,915.48-2,187.82

Finding the Fourth Proportional to 3,943.65, 5,915.48 and 2,187.82

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Solution

The fourth proportional to 3,943.65, 5,915.48 and 2,187.82 is: 3,281.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.65 : 5,915.48 = 2,187.82 : x
  2. Step 2: Convert to fraction form
    3,943.65/5,915.48 = 2,187.82/x
  3. Step 3: Cross multiply
    3,943.65x = 5,915.48 × 2,187.82
  4. Step 4: Simplify right side
    3,943.65x = 12,942,005.45
  5. Step 5: Solve for x
    x = 12,942,005.45/3,943.65
  6. Step 6: Final answer
    x = 3,281.73

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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.