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Finding the Fourth Proportional to 7,384.13, 11,076.19 and 1,912.13

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Solution

The fourth proportional to 7,384.13, 11,076.19 and 1,912.13 is: 2,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,384.13 : 11,076.19 = 1,912.13 : x
  2. Step 2: Convert to fraction form
    7,384.13/11,076.19 = 1,912.13/x
  3. Step 3: Cross multiply
    7,384.13x = 11,076.19 × 1,912.13
  4. Step 4: Simplify right side
    7,384.13x = 21,179,115.18
  5. Step 5: Solve for x
    x = 21,179,115.18/7,384.13
  6. Step 6: Final answer
    x = 2,868.19

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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.