Home / 2,813.47-3,882.74-1,618.83

Finding the Fourth Proportional to 2,813.47, 3,882.74 and 1,618.83

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Solution

The fourth proportional to 2,813.47, 3,882.74 and 1,618.83 is: 2,234.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.47 : 3,882.74 = 1,618.83 : x
  2. Step 2: Convert to fraction form
    2,813.47/3,882.74 = 1,618.83/x
  3. Step 3: Cross multiply
    2,813.47x = 3,882.74 × 1,618.83
  4. Step 4: Simplify right side
    2,813.47x = 6,285,487.90
  5. Step 5: Solve for x
    x = 6,285,487.90/2,813.47
  6. Step 6: Final answer
    x = 2,234.07

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1.5x scale

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.