Home / 3,147.05-4,342.87-2,028.19

Finding the Fourth Proportional to 3,147.05, 4,342.87 and 2,028.19

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Solution

The fourth proportional to 3,147.05, 4,342.87 and 2,028.19 is: 2,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.05 : 4,342.87 = 2,028.19 : x
  2. Step 2: Convert to fraction form
    3,147.05/4,342.87 = 2,028.19/x
  3. Step 3: Cross multiply
    3,147.05x = 4,342.87 × 2,028.19
  4. Step 4: Simplify right side
    3,147.05x = 8,808,153.92
  5. Step 5: Solve for x
    x = 8,808,153.92/3,147.05
  6. Step 6: Final answer
    x = 2,798.86

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Half scale
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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.