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Finding the Fourth Proportional to 6,403.91, 8,801.62 and 5,653.31

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Solution

The fourth proportional to 6,403.91, 8,801.62 and 5,653.31 is: 7,769.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,403.91 : 8,801.62 = 5,653.31 : x
  2. Step 2: Convert to fraction form
    6,403.91/8,801.62 = 5,653.31/x
  3. Step 3: Cross multiply
    6,403.91x = 8,801.62 × 5,653.31
  4. Step 4: Simplify right side
    6,403.91x = 49,758,286.36
  5. Step 5: Solve for x
    x = 49,758,286.36/6,403.91
  6. Step 6: Final answer
    x = 7,769.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.