Home / 6,905.68-9,529.50-3,921.12

Finding the Fourth Proportional to 6,905.68, 9,529.50 and 3,921.12

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Solution

The fourth proportional to 6,905.68, 9,529.50 and 3,921.12 is: 5,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,905.68 : 9,529.50 = 3,921.12 : x
  2. Step 2: Convert to fraction form
    6,905.68/9,529.50 = 3,921.12/x
  3. Step 3: Cross multiply
    6,905.68x = 9,529.50 × 3,921.12
  4. Step 4: Simplify right side
    6,905.68x = 37,366,265.39
  5. Step 5: Solve for x
    x = 37,366,265.39/6,905.68
  6. Step 6: Final answer
    x = 5,410.95

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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.