Home / 1,207.51-1,812.30-1,198.42

Finding the Fourth Proportional to 1,207.51, 1,812.30 and 1,198.42

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Solution

The fourth proportional to 1,207.51, 1,812.30 and 1,198.42 is: 1,798.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.51 : 1,812.30 = 1,198.42 : x
  2. Step 2: Convert to fraction form
    1,207.51/1,812.30 = 1,198.42/x
  3. Step 3: Cross multiply
    1,207.51x = 1,812.30 × 1,198.42
  4. Step 4: Simplify right side
    1,207.51x = 2,171,896.57
  5. Step 5: Solve for x
    x = 2,171,896.57/1,207.51
  6. Step 6: Final answer
    x = 1,798.66

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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.