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Finding the Fourth Proportional to 3,998.32, 5,998.52 and 1,919.93

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Solution

The fourth proportional to 3,998.32, 5,998.52 and 1,919.93 is: 2,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.32 : 5,998.52 = 1,919.93 : x
  2. Step 2: Convert to fraction form
    3,998.32/5,998.52 = 1,919.93/x
  3. Step 3: Cross multiply
    3,998.32x = 5,998.52 × 1,919.93
  4. Step 4: Simplify right side
    3,998.32x = 11,516,738.50
  5. Step 5: Solve for x
    x = 11,516,738.50/3,998.32
  6. Step 6: Final answer
    x = 2,880.39

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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.