Home / 3,819.95-5,731.38-1,969.89

Finding the Fourth Proportional to 3,819.95, 5,731.38 and 1,969.89

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Solution

The fourth proportional to 3,819.95, 5,731.38 and 1,969.89 is: 2,955.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.95 : 5,731.38 = 1,969.89 : x
  2. Step 2: Convert to fraction form
    3,819.95/5,731.38 = 1,969.89/x
  3. Step 3: Cross multiply
    3,819.95x = 5,731.38 × 1,969.89
  4. Step 4: Simplify right side
    3,819.95x = 11,290,159.49
  5. Step 5: Solve for x
    x = 11,290,159.49/3,819.95
  6. Step 6: Final answer
    x = 2,955.58

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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.