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Finding the Fourth Proportional to 5,698.72, 7,863.53 and 3,180.97

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Solution

The fourth proportional to 5,698.72, 7,863.53 and 3,180.97 is: 4,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,698.72 : 7,863.53 = 3,180.97 : x
  2. Step 2: Convert to fraction form
    5,698.72/7,863.53 = 3,180.97/x
  3. Step 3: Cross multiply
    5,698.72x = 7,863.53 × 3,180.97
  4. Step 4: Simplify right side
    5,698.72x = 25,013,637.12
  5. Step 5: Solve for x
    x = 25,013,637.12/5,698.72
  6. Step 6: Final answer
    x = 4,389.34

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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.