Home / 2,813.20-3,882.40-1,618.58

Finding the Fourth Proportional to 2,813.20, 3,882.40 and 1,618.58

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Solution

The fourth proportional to 2,813.20, 3,882.40 and 1,618.58 is: 2,233.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.20 : 3,882.40 = 1,618.58 : x
  2. Step 2: Convert to fraction form
    2,813.20/3,882.40 = 1,618.58/x
  3. Step 3: Cross multiply
    2,813.20x = 3,882.40 × 1,618.58
  4. Step 4: Simplify right side
    2,813.20x = 6,283,974.99
  5. Step 5: Solve for x
    x = 6,283,974.99/2,813.20
  6. Step 6: Final answer
    x = 2,233.75

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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.