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Finding the Fourth Proportional to 3,474.26, 5,211.42 and 877.19

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Solution

The fourth proportional to 3,474.26, 5,211.42 and 877.19 is: 1,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.26 : 5,211.42 = 877.19 : x
  2. Step 2: Convert to fraction form
    3,474.26/5,211.42 = 877.19/x
  3. Step 3: Cross multiply
    3,474.26x = 5,211.42 × 877.19
  4. Step 4: Simplify right side
    3,474.26x = 4,571,401.12
  5. Step 5: Solve for x
    x = 4,571,401.12/3,474.26
  6. Step 6: Final answer
    x = 1,315.79

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1.5x scale

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.