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Finding the Fourth Proportional to 6,711.55, 9,261.26 and 3,918.67

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Solution

The fourth proportional to 6,711.55, 9,261.26 and 3,918.67 is: 5,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,711.55 : 9,261.26 = 3,918.67 : x
  2. Step 2: Convert to fraction form
    6,711.55/9,261.26 = 3,918.67/x
  3. Step 3: Cross multiply
    6,711.55x = 9,261.26 × 3,918.67
  4. Step 4: Simplify right side
    6,711.55x = 36,291,793.67
  5. Step 5: Solve for x
    x = 36,291,793.67/6,711.55
  6. Step 6: Final answer
    x = 5,407.37

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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.