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Finding the Fourth Proportional to 6,642.24, 9,963.36 and 5,786.88

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Solution

The fourth proportional to 6,642.24, 9,963.36 and 5,786.88 is: 8,680.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.24 : 9,963.36 = 5,786.88 : x
  2. Step 2: Convert to fraction form
    6,642.24/9,963.36 = 5,786.88/x
  3. Step 3: Cross multiply
    6,642.24x = 9,963.36 × 5,786.88
  4. Step 4: Simplify right side
    6,642.24x = 57,656,768.72
  5. Step 5: Solve for x
    x = 57,656,768.72/6,642.24
  6. Step 6: Final answer
    x = 8,680.32

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.