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Finding the Fourth Proportional to 5,245.61, 7,239.17 and 3,007.31

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Solution

The fourth proportional to 5,245.61, 7,239.17 and 3,007.31 is: 4,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.61 : 7,239.17 = 3,007.31 : x
  2. Step 2: Convert to fraction form
    5,245.61/7,239.17 = 3,007.31/x
  3. Step 3: Cross multiply
    5,245.61x = 7,239.17 × 3,007.31
  4. Step 4: Simplify right side
    5,245.61x = 21,770,399.66
  5. Step 5: Solve for x
    x = 21,770,399.66/5,245.61
  6. Step 6: Final answer
    x = 4,150.22

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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.