Home / 1,998.08-2,760.32-1,982.72

Finding the Fourth Proportional to 1,998.08, 2,760.32 and 1,982.72

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Solution

The fourth proportional to 1,998.08, 2,760.32 and 1,982.72 is: 2,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.08 : 2,760.32 = 1,982.72 : x
  2. Step 2: Convert to fraction form
    1,998.08/2,760.32 = 1,982.72/x
  3. Step 3: Cross multiply
    1,998.08x = 2,760.32 × 1,982.72
  4. Step 4: Simplify right side
    1,998.08x = 5,472,941.67
  5. Step 5: Solve for x
    x = 5,472,941.67/1,998.08
  6. Step 6: Final answer
    x = 2,739.10

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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.