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Finding the Fourth Proportional to 5,661.93, 8,489.63 and 2,195.13

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Solution

The fourth proportional to 5,661.93, 8,489.63 and 2,195.13 is: 3,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.93 : 8,489.63 = 2,195.13 : x
  2. Step 2: Convert to fraction form
    5,661.93/8,489.63 = 2,195.13/x
  3. Step 3: Cross multiply
    5,661.93x = 8,489.63 × 2,195.13
  4. Step 4: Simplify right side
    5,661.93x = 18,635,830.53
  5. Step 5: Solve for x
    x = 18,635,830.53/5,661.93
  6. Step 6: Final answer
    x = 3,291.43

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Double scale
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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.