Home / 3,943.81-5,915.25-1,021.89

Finding the Fourth Proportional to 3,943.81, 5,915.25 and 1,021.89

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Solution

The fourth proportional to 3,943.81, 5,915.25 and 1,021.89 is: 1,532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.81 : 5,915.25 = 1,021.89 : x
  2. Step 2: Convert to fraction form
    3,943.81/5,915.25 = 1,021.89/x
  3. Step 3: Cross multiply
    3,943.81x = 5,915.25 × 1,021.89
  4. Step 4: Simplify right side
    3,943.81x = 6,044,734.82
  5. Step 5: Solve for x
    x = 6,044,734.82/3,943.81
  6. Step 6: Final answer
    x = 1,532.71

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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.