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Finding the Fourth Proportional to 4,721.86, 7,083.74 and 2,644.82

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Solution

The fourth proportional to 4,721.86, 7,083.74 and 2,644.82 is: 3,967.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.86 : 7,083.74 = 2,644.82 : x
  2. Step 2: Convert to fraction form
    4,721.86/7,083.74 = 2,644.82/x
  3. Step 3: Cross multiply
    4,721.86x = 7,083.74 × 2,644.82
  4. Step 4: Simplify right side
    4,721.86x = 18,735,217.23
  5. Step 5: Solve for x
    x = 18,735,217.23/4,721.86
  6. Step 6: Final answer
    x = 3,967.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.