Home / 6,861.81-9,469.20-3,877.55

Finding the Fourth Proportional to 6,861.81, 9,469.20 and 3,877.55

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Solution

The fourth proportional to 6,861.81, 9,469.20 and 3,877.55 is: 5,350.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.81 : 9,469.20 = 3,877.55 : x
  2. Step 2: Convert to fraction form
    6,861.81/9,469.20 = 3,877.55/x
  3. Step 3: Cross multiply
    6,861.81x = 9,469.20 × 3,877.55
  4. Step 4: Simplify right side
    6,861.81x = 36,717,296.46
  5. Step 5: Solve for x
    x = 36,717,296.46/6,861.81
  6. Step 6: Final answer
    x = 5,350.96

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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.