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Finding the Fourth Proportional to 3,474.80, 5,212.21 and 877.73

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Solution

The fourth proportional to 3,474.80, 5,212.21 and 877.73 is: 1,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.80 : 5,212.21 = 877.73 : x
  2. Step 2: Convert to fraction form
    3,474.80/5,212.21 = 877.73/x
  3. Step 3: Cross multiply
    3,474.80x = 5,212.21 × 877.73
  4. Step 4: Simplify right side
    3,474.80x = 4,574,923.92
  5. Step 5: Solve for x
    x = 4,574,923.92/3,474.80
  6. Step 6: Final answer
    x = 1,316.60

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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.