Home / 12,622.19-18,936.07-3,857.79

Finding the Fourth Proportional to 12,622.19, 18,936.07 and 3,857.79

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Solution

The fourth proportional to 12,622.19, 18,936.07 and 3,857.79 is: 5,787.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.19 : 18,936.07 = 3,857.79 : x
  2. Step 2: Convert to fraction form
    12,622.19/18,936.07 = 3,857.79/x
  3. Step 3: Cross multiply
    12,622.19x = 18,936.07 × 3,857.79
  4. Step 4: Simplify right side
    12,622.19x = 73,051,381.49
  5. Step 5: Solve for x
    x = 73,051,381.49/12,622.19
  6. Step 6: Final answer
    x = 5,787.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.