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Finding the Fourth Proportional to 6,481.81, 8,940.12 and 4,888.52

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Solution

The fourth proportional to 6,481.81, 8,940.12 and 4,888.52 is: 6,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.81 : 8,940.12 = 4,888.52 : x
  2. Step 2: Convert to fraction form
    6,481.81/8,940.12 = 4,888.52/x
  3. Step 3: Cross multiply
    6,481.81x = 8,940.12 × 4,888.52
  4. Step 4: Simplify right side
    6,481.81x = 43,703,977.77
  5. Step 5: Solve for x
    x = 43,703,977.77/6,481.81
  6. Step 6: Final answer
    x = 6,742.56

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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.