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Finding the Fourth Proportional to 3,919.81, 5,881.24 and 1,726.99

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Solution

The fourth proportional to 3,919.81, 5,881.24 and 1,726.99 is: 2,591.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.81 : 5,881.24 = 1,726.99 : x
  2. Step 2: Convert to fraction form
    3,919.81/5,881.24 = 1,726.99/x
  3. Step 3: Cross multiply
    3,919.81x = 5,881.24 × 1,726.99
  4. Step 4: Simplify right side
    3,919.81x = 10,156,852.18
  5. Step 5: Solve for x
    x = 10,156,852.18/3,919.81
  6. Step 6: Final answer
    x = 2,591.16

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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.