Home / 2,839.96-3,919.10-1,581

Finding the Fourth Proportional to 2,839.96, 3,919.10 and 1,581

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Solution

The fourth proportional to 2,839.96, 3,919.10 and 1,581 is: 2,181.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.96 : 3,919.10 = 1,581 : x
  2. Step 2: Convert to fraction form
    2,839.96/3,919.10 = 1,581/x
  3. Step 3: Cross multiply
    2,839.96x = 3,919.10 × 1,581
  4. Step 4: Simplify right side
    2,839.96x = 6,196,097.10
  5. Step 5: Solve for x
    x = 6,196,097.10/2,839.96
  6. Step 6: Final answer
    x = 2,181.76

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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.