Home / 3,390.92-4,680.02-2,028.09

Finding the Fourth Proportional to 3,390.92, 4,680.02 and 2,028.09

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Solution

The fourth proportional to 3,390.92, 4,680.02 and 2,028.09 is: 2,799.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.92 : 4,680.02 = 2,028.09 : x
  2. Step 2: Convert to fraction form
    3,390.92/4,680.02 = 2,028.09/x
  3. Step 3: Cross multiply
    3,390.92x = 4,680.02 × 2,028.09
  4. Step 4: Simplify right side
    3,390.92x = 9,491,501.76
  5. Step 5: Solve for x
    x = 9,491,501.76/3,390.92
  6. Step 6: Final answer
    x = 2,799.09

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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.