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Finding the Fourth Proportional to 6,879.58, 9,493.56 and 3,894.82

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Solution

The fourth proportional to 6,879.58, 9,493.56 and 3,894.82 is: 5,374.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.58 : 9,493.56 = 3,894.82 : x
  2. Step 2: Convert to fraction form
    6,879.58/9,493.56 = 3,894.82/x
  3. Step 3: Cross multiply
    6,879.58x = 9,493.56 × 3,894.82
  4. Step 4: Simplify right side
    6,879.58x = 36,975,707.36
  5. Step 5: Solve for x
    x = 36,975,707.36/6,879.58
  6. Step 6: Final answer
    x = 5,374.70

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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.