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Finding the Fourth Proportional to 5,918.71, 8,872.90 and 2,219.95

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Solution

The fourth proportional to 5,918.71, 8,872.90 and 2,219.95 is: 3,327.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.71 : 8,872.90 = 2,219.95 : x
  2. Step 2: Convert to fraction form
    5,918.71/8,872.90 = 2,219.95/x
  3. Step 3: Cross multiply
    5,918.71x = 8,872.90 × 2,219.95
  4. Step 4: Simplify right side
    5,918.71x = 19,697,394.36
  5. Step 5: Solve for x
    x = 19,697,394.36/5,918.71
  6. Step 6: Final answer
    x = 3,327.99

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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.