Home / 1,819.28-2,511.79-1,398.85

Finding the Fourth Proportional to 1,819.28, 2,511.79 and 1,398.85

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Solution

The fourth proportional to 1,819.28, 2,511.79 and 1,398.85 is: 1,931.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.28 : 2,511.79 = 1,398.85 : x
  2. Step 2: Convert to fraction form
    1,819.28/2,511.79 = 1,398.85/x
  3. Step 3: Cross multiply
    1,819.28x = 2,511.79 × 1,398.85
  4. Step 4: Simplify right side
    1,819.28x = 3,513,617.44
  5. Step 5: Solve for x
    x = 3,513,617.44/1,819.28
  6. Step 6: Final answer
    x = 1,931.33

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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.