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Finding the Fourth Proportional to 5,661.06, 7,813.86 and 3,982.86

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Solution

The fourth proportional to 5,661.06, 7,813.86 and 3,982.86 is: 5,497.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.06 : 7,813.86 = 3,982.86 : x
  2. Step 2: Convert to fraction form
    5,661.06/7,813.86 = 3,982.86/x
  3. Step 3: Cross multiply
    5,661.06x = 7,813.86 × 3,982.86
  4. Step 4: Simplify right side
    5,661.06x = 31,121,510.44
  5. Step 5: Solve for x
    x = 31,121,510.44/5,661.06
  6. Step 6: Final answer
    x = 5,497.47

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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.