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Finding the Fourth Proportional to 6,896.64, 9,515.88 and 3,912.24

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Solution

The fourth proportional to 6,896.64, 9,515.88 and 3,912.24 is: 5,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,896.64 : 9,515.88 = 3,912.24 : x
  2. Step 2: Convert to fraction form
    6,896.64/9,515.88 = 3,912.24/x
  3. Step 3: Cross multiply
    6,896.64x = 9,515.88 × 3,912.24
  4. Step 4: Simplify right side
    6,896.64x = 37,228,406.37
  5. Step 5: Solve for x
    x = 37,228,406.37/6,896.64
  6. Step 6: Final answer
    x = 5,398.05

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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.