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Finding the Fourth Proportional to 3,474.62, 5,211.95 and 877.55

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Solution

The fourth proportional to 3,474.62, 5,211.95 and 877.55 is: 1,316.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.62 : 5,211.95 = 877.55 : x
  2. Step 2: Convert to fraction form
    3,474.62/5,211.95 = 877.55/x
  3. Step 3: Cross multiply
    3,474.62x = 5,211.95 × 877.55
  4. Step 4: Simplify right side
    3,474.62x = 4,573,716.28
  5. Step 5: Solve for x
    x = 4,573,716.28/3,474.62
  6. Step 6: Final answer
    x = 1,316.32

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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.