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Finding the Fourth Proportional to 5,509.91, 8,266.08 and 1,811.99

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Solution

The fourth proportional to 5,509.91, 8,266.08 and 1,811.99 is: 2,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,509.91 : 8,266.08 = 1,811.99 : x
  2. Step 2: Convert to fraction form
    5,509.91/8,266.08 = 1,811.99/x
  3. Step 3: Cross multiply
    5,509.91x = 8,266.08 × 1,811.99
  4. Step 4: Simplify right side
    5,509.91x = 14,978,081.76
  5. Step 5: Solve for x
    x = 14,978,081.76/5,509.91
  6. Step 6: Final answer
    x = 2,718.39

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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.