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Finding the Fourth Proportional to 2,998.90, 4,137.42 and 2,004.81

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Solution

The fourth proportional to 2,998.90, 4,137.42 and 2,004.81 is: 2,765.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.90 : 4,137.42 = 2,004.81 : x
  2. Step 2: Convert to fraction form
    2,998.90/4,137.42 = 2,004.81/x
  3. Step 3: Cross multiply
    2,998.90x = 4,137.42 × 2,004.81
  4. Step 4: Simplify right side
    2,998.90x = 8,294,740.99
  5. Step 5: Solve for x
    x = 8,294,740.99/2,998.90
  6. Step 6: Final answer
    x = 2,765.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.