Home / 3,821.07-5,731.71-1,047.78

Finding the Fourth Proportional to 3,821.07, 5,731.71 and 1,047.78

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Solution

The fourth proportional to 3,821.07, 5,731.71 and 1,047.78 is: 1,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.07 : 5,731.71 = 1,047.78 : x
  2. Step 2: Convert to fraction form
    3,821.07/5,731.71 = 1,047.78/x
  3. Step 3: Cross multiply
    3,821.07x = 5,731.71 × 1,047.78
  4. Step 4: Simplify right side
    3,821.07x = 6,005,571.10
  5. Step 5: Solve for x
    x = 6,005,571.10/3,821.07
  6. Step 6: Final answer
    x = 1,571.70

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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.