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Finding the Fourth Proportional to 6,821.26, 9,418.63 and 5,326.58

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Solution

The fourth proportional to 6,821.26, 9,418.63 and 5,326.58 is: 7,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.26 : 9,418.63 = 5,326.58 : x
  2. Step 2: Convert to fraction form
    6,821.26/9,418.63 = 5,326.58/x
  3. Step 3: Cross multiply
    6,821.26x = 9,418.63 × 5,326.58
  4. Step 4: Simplify right side
    6,821.26x = 50,169,086.19
  5. Step 5: Solve for x
    x = 50,169,086.19/6,821.26
  6. Step 6: Final answer
    x = 7,354.81

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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.