Home / 6,121.90-9,181.45-2,998.78

Finding the Fourth Proportional to 6,121.90, 9,181.45 and 2,998.78

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Solution

The fourth proportional to 6,121.90, 9,181.45 and 2,998.78 is: 4,497.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.90 : 9,181.45 = 2,998.78 : x
  2. Step 2: Convert to fraction form
    6,121.90/9,181.45 = 2,998.78/x
  3. Step 3: Cross multiply
    6,121.90x = 9,181.45 × 2,998.78
  4. Step 4: Simplify right side
    6,121.90x = 27,533,148.63
  5. Step 5: Solve for x
    x = 27,533,148.63/6,121.90
  6. Step 6: Final answer
    x = 4,497.48

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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.