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Finding the Fourth Proportional to 3,454.03, 5,181.05 and 2,978.36

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Solution

The fourth proportional to 3,454.03, 5,181.05 and 2,978.36 is: 4,467.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.03 : 5,181.05 = 2,978.36 : x
  2. Step 2: Convert to fraction form
    3,454.03/5,181.05 = 2,978.36/x
  3. Step 3: Cross multiply
    3,454.03x = 5,181.05 × 2,978.36
  4. Step 4: Simplify right side
    3,454.03x = 15,431,017.19
  5. Step 5: Solve for x
    x = 15,431,017.19/3,454.03
  6. Step 6: Final answer
    x = 4,467.54

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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.