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Finding the Fourth Proportional to 7,212.54, 9,945.46 and 4,689.97

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Solution

The fourth proportional to 7,212.54, 9,945.46 and 4,689.97 is: 6,467.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.54 : 9,945.46 = 4,689.97 : x
  2. Step 2: Convert to fraction form
    7,212.54/9,945.46 = 4,689.97/x
  3. Step 3: Cross multiply
    7,212.54x = 9,945.46 × 4,689.97
  4. Step 4: Simplify right side
    7,212.54x = 46,643,932.79
  5. Step 5: Solve for x
    x = 46,643,932.79/7,212.54
  6. Step 6: Final answer
    x = 6,467.06

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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.