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Finding the Fourth Proportional to 5,660.63, 7,811.67 and 3,142.73

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Solution

The fourth proportional to 5,660.63, 7,811.67 and 3,142.73 is: 4,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,660.63 : 7,811.67 = 3,142.73 : x
  2. Step 2: Convert to fraction form
    5,660.63/7,811.67 = 3,142.73/x
  3. Step 3: Cross multiply
    5,660.63x = 7,811.67 × 3,142.73
  4. Step 4: Simplify right side
    5,660.63x = 24,549,930.60
  5. Step 5: Solve for x
    x = 24,549,930.60/5,660.63
  6. Step 6: Final answer
    x = 4,336.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.