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Finding the Fourth Proportional to 3,998.90, 6,000.15 and 1,403.70

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Solution

The fourth proportional to 3,998.90, 6,000.15 and 1,403.70 is: 2,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.90 : 6,000.15 = 1,403.70 : x
  2. Step 2: Convert to fraction form
    3,998.90/6,000.15 = 1,403.70/x
  3. Step 3: Cross multiply
    3,998.90x = 6,000.15 × 1,403.70
  4. Step 4: Simplify right side
    3,998.90x = 8,422,410.56
  5. Step 5: Solve for x
    x = 8,422,410.56/3,998.90
  6. Step 6: Final answer
    x = 2,106.18

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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.