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Finding the Fourth Proportional to 6,643.56, 9,168.24 and 4,286.52

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Solution

The fourth proportional to 6,643.56, 9,168.24 and 4,286.52 is: 5,915.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,643.56 : 9,168.24 = 4,286.52 : x
  2. Step 2: Convert to fraction form
    6,643.56/9,168.24 = 4,286.52/x
  3. Step 3: Cross multiply
    6,643.56x = 9,168.24 × 4,286.52
  4. Step 4: Simplify right side
    6,643.56x = 39,299,844.12
  5. Step 5: Solve for x
    x = 39,299,844.12/6,643.56
  6. Step 6: Final answer
    x = 5,915.48

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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.