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Finding the Fourth Proportional to 5,811.98, 8,717.11 and 1,915.88

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Solution

The fourth proportional to 5,811.98, 8,717.11 and 1,915.88 is: 2,873.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.98 : 8,717.11 = 1,915.88 : x
  2. Step 2: Convert to fraction form
    5,811.98/8,717.11 = 1,915.88/x
  3. Step 3: Cross multiply
    5,811.98x = 8,717.11 × 1,915.88
  4. Step 4: Simplify right side
    5,811.98x = 16,700,888.33
  5. Step 5: Solve for x
    x = 16,700,888.33/5,811.98
  6. Step 6: Final answer
    x = 2,873.53

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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.