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Finding the Fourth Proportional to 4,891.11, 6,739.16 and 3,316.47

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Solution

The fourth proportional to 4,891.11, 6,739.16 and 3,316.47 is: 4,569.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.11 : 6,739.16 = 3,316.47 : x
  2. Step 2: Convert to fraction form
    4,891.11/6,739.16 = 3,316.47/x
  3. Step 3: Cross multiply
    4,891.11x = 6,739.16 × 3,316.47
  4. Step 4: Simplify right side
    4,891.11x = 22,350,221.97
  5. Step 5: Solve for x
    x = 22,350,221.97/4,891.11
  6. Step 6: Final answer
    x = 4,569.56

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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.