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Finding the Fourth Proportional to 3,881.93, 5,818.33 and 1,415.17

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Solution

The fourth proportional to 3,881.93, 5,818.33 and 1,415.17 is: 2,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.93 : 5,818.33 = 1,415.17 : x
  2. Step 2: Convert to fraction form
    3,881.93/5,818.33 = 1,415.17/x
  3. Step 3: Cross multiply
    3,881.93x = 5,818.33 × 1,415.17
  4. Step 4: Simplify right side
    3,881.93x = 8,233,935.11
  5. Step 5: Solve for x
    x = 8,233,935.11/3,881.93
  6. Step 6: Final answer
    x = 2,121.10

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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.