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Finding the Fourth Proportional to 5,181.98, 7,150.28 and 4,919.33

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Solution

The fourth proportional to 5,181.98, 7,150.28 and 4,919.33 is: 6,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.98 : 7,150.28 = 4,919.33 : x
  2. Step 2: Convert to fraction form
    5,181.98/7,150.28 = 4,919.33/x
  3. Step 3: Cross multiply
    5,181.98x = 7,150.28 × 4,919.33
  4. Step 4: Simplify right side
    5,181.98x = 35,174,580.19
  5. Step 5: Solve for x
    x = 35,174,580.19/5,181.98
  6. Step 6: Final answer
    x = 6,787.87

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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.