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Finding the Fourth Proportional to 5,253.75, 7,880.83 and 1,791

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Solution

The fourth proportional to 5,253.75, 7,880.83 and 1,791 is: 2,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.75 : 7,880.83 = 1,791 : x
  2. Step 2: Convert to fraction form
    5,253.75/7,880.83 = 1,791/x
  3. Step 3: Cross multiply
    5,253.75x = 7,880.83 × 1,791
  4. Step 4: Simplify right side
    5,253.75x = 14,114,562.05
  5. Step 5: Solve for x
    x = 14,114,562.05/5,253.75
  6. Step 6: Final answer
    x = 2,686.57

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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.