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Finding the Fourth Proportional to 1,998.96, 3,000.36 and 1,873.20

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Solution

The fourth proportional to 1,998.96, 3,000.36 and 1,873.20 is: 2,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.96 : 3,000.36 = 1,873.20 : x
  2. Step 2: Convert to fraction form
    1,998.96/3,000.36 = 1,873.20/x
  3. Step 3: Cross multiply
    1,998.96x = 3,000.36 × 1,873.20
  4. Step 4: Simplify right side
    1,998.96x = 5,620,274.35
  5. Step 5: Solve for x
    x = 5,620,274.35/1,998.96
  6. Step 6: Final answer
    x = 2,811.60

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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.