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Finding the Fourth Proportional to 5,661.44, 8,489.28 and 3,815.36

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Solution

The fourth proportional to 5,661.44, 8,489.28 and 3,815.36 is: 5,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.44 : 8,489.28 = 3,815.36 : x
  2. Step 2: Convert to fraction form
    5,661.44/8,489.28 = 3,815.36/x
  3. Step 3: Cross multiply
    5,661.44x = 8,489.28 × 3,815.36
  4. Step 4: Simplify right side
    5,661.44x = 32,389,659.34
  5. Step 5: Solve for x
    x = 32,389,659.34/5,661.44
  6. Step 6: Final answer
    x = 5,721.10

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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.