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Finding the Fourth Proportional to 5,571.65, 8,355.15 and 1,872.99

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Solution

The fourth proportional to 5,571.65, 8,355.15 and 1,872.99 is: 2,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.65 : 8,355.15 = 1,872.99 : x
  2. Step 2: Convert to fraction form
    5,571.65/8,355.15 = 1,872.99/x
  3. Step 3: Cross multiply
    5,571.65x = 8,355.15 × 1,872.99
  4. Step 4: Simplify right side
    5,571.65x = 15,649,112.40
  5. Step 5: Solve for x
    x = 15,649,112.40/5,571.65
  6. Step 6: Final answer
    x = 2,808.70

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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.