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Finding the Fourth Proportional to 5,305.86, 7,310.43 and 3,955.73

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Solution

The fourth proportional to 5,305.86, 7,310.43 and 3,955.73 is: 5,450.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,305.86 : 7,310.43 = 3,955.73 : x
  2. Step 2: Convert to fraction form
    5,305.86/7,310.43 = 3,955.73/x
  3. Step 3: Cross multiply
    5,305.86x = 7,310.43 × 3,955.73
  4. Step 4: Simplify right side
    5,305.86x = 28,918,050.71
  5. Step 5: Solve for x
    x = 28,918,050.71/5,305.86
  6. Step 6: Final answer
    x = 5,450.21

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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.