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Finding the Fourth Proportional to 3,451.32, 5,177.01 and 854.28

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Solution

The fourth proportional to 3,451.32, 5,177.01 and 854.28 is: 1,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.32 : 5,177.01 = 854.28 : x
  2. Step 2: Convert to fraction form
    3,451.32/5,177.01 = 854.28/x
  3. Step 3: Cross multiply
    3,451.32x = 5,177.01 × 854.28
  4. Step 4: Simplify right side
    3,451.32x = 4,422,616.10
  5. Step 5: Solve for x
    x = 4,422,616.10/3,451.32
  6. Step 6: Final answer
    x = 1,281.43

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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.