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Finding the Fourth Proportional to 6,761.56, 9,330.24 and 3,928.39

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Solution

The fourth proportional to 6,761.56, 9,330.24 and 3,928.39 is: 5,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,761.56 : 9,330.24 = 3,928.39 : x
  2. Step 2: Convert to fraction form
    6,761.56/9,330.24 = 3,928.39/x
  3. Step 3: Cross multiply
    6,761.56x = 9,330.24 × 3,928.39
  4. Step 4: Simplify right side
    6,761.56x = 36,652,821.51
  5. Step 5: Solve for x
    x = 36,652,821.51/6,761.56
  6. Step 6: Final answer
    x = 5,420.76

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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.