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Finding the Fourth Proportional to 1,998.40, 2,750.16 and 1,851.52

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Solution

The fourth proportional to 1,998.40, 2,750.16 and 1,851.52 is: 2,548.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,998.40 : 2,750.16 = 1,851.52 : x
  2. Step 2: Convert to fraction form
    1,998.40/2,750.16 = 1,851.52/x
  3. Step 3: Cross multiply
    1,998.40x = 2,750.16 × 1,851.52
  4. Step 4: Simplify right side
    1,998.40x = 5,091,976.24
  5. Step 5: Solve for x
    x = 5,091,976.24/1,998.40
  6. Step 6: Final answer
    x = 2,548.03

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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.