Home / 1,998.02-2,997.05-1,120.38

Finding the Fourth Proportional to 1,998.02, 2,997.05 and 1,120.38

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Solution

The fourth proportional to 1,998.02, 2,997.05 and 1,120.38 is: 1,680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.02 : 2,997.05 = 1,120.38 : x
  2. Step 2: Convert to fraction form
    1,998.02/2,997.05 = 1,120.38/x
  3. Step 3: Cross multiply
    1,998.02x = 2,997.05 × 1,120.38
  4. Step 4: Simplify right side
    1,998.02x = 3,357,834.88
  5. Step 5: Solve for x
    x = 3,357,834.88/1,998.02
  6. Step 6: Final answer
    x = 1,680.58

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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.