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Finding the Fourth Proportional to 5,921.28, 8,169.04 and 5,175.27

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Solution

The fourth proportional to 5,921.28, 8,169.04 and 5,175.27 is: 7,139.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.28 : 8,169.04 = 5,175.27 : x
  2. Step 2: Convert to fraction form
    5,921.28/8,169.04 = 5,175.27/x
  3. Step 3: Cross multiply
    5,921.28x = 8,169.04 × 5,175.27
  4. Step 4: Simplify right side
    5,921.28x = 42,276,987.64
  5. Step 5: Solve for x
    x = 42,276,987.64/5,921.28
  6. Step 6: Final answer
    x = 7,139.84

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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.