Home / 3,819.76-5,271.53-2,141.28

Finding the Fourth Proportional to 3,819.76, 5,271.53 and 2,141.28

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Solution

The fourth proportional to 3,819.76, 5,271.53 and 2,141.28 is: 2,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.76 : 5,271.53 = 2,141.28 : x
  2. Step 2: Convert to fraction form
    3,819.76/5,271.53 = 2,141.28/x
  3. Step 3: Cross multiply
    3,819.76x = 5,271.53 × 2,141.28
  4. Step 4: Simplify right side
    3,819.76x = 11,287,811.05
  5. Step 5: Solve for x
    x = 11,287,811.05/3,819.76
  6. Step 6: Final answer
    x = 2,955.11

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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.