Home / 2,807.25-3,872.57-1,628.09

Finding the Fourth Proportional to 2,807.25, 3,872.57 and 1,628.09

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Solution

The fourth proportional to 2,807.25, 3,872.57 and 1,628.09 is: 2,245.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.25 : 3,872.57 = 1,628.09 : x
  2. Step 2: Convert to fraction form
    2,807.25/3,872.57 = 1,628.09/x
  3. Step 3: Cross multiply
    2,807.25x = 3,872.57 × 1,628.09
  4. Step 4: Simplify right side
    2,807.25x = 6,304,892.49
  5. Step 5: Solve for x
    x = 6,304,892.49/2,807.25
  6. Step 6: Final answer
    x = 2,245.93

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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.