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Finding the Fourth Proportional to 3,998.80, 6,005.40 and 2,904.40

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Solution

The fourth proportional to 3,998.80, 6,005.40 and 2,904.40 is: 4,361.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.80 : 6,005.40 = 2,904.40 : x
  2. Step 2: Convert to fraction form
    3,998.80/6,005.40 = 2,904.40/x
  3. Step 3: Cross multiply
    3,998.80x = 6,005.40 × 2,904.40
  4. Step 4: Simplify right side
    3,998.80x = 17,442,083.76
  5. Step 5: Solve for x
    x = 17,442,083.76/3,998.80
  6. Step 6: Final answer
    x = 4,361.83

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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.