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Finding the Fourth Proportional to 5,318.28, 8,017.24 and 4,961.48

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Solution

The fourth proportional to 5,318.28, 8,017.24 and 4,961.48 is: 7,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.28 : 8,017.24 = 4,961.48 : x
  2. Step 2: Convert to fraction form
    5,318.28/8,017.24 = 4,961.48/x
  3. Step 3: Cross multiply
    5,318.28x = 8,017.24 × 4,961.48
  4. Step 4: Simplify right side
    5,318.28x = 39,777,323.43
  5. Step 5: Solve for x
    x = 39,777,323.43/5,318.28
  6. Step 6: Final answer
    x = 7,479.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.