Home / 1,245.36-1,855.90-1,207.82

Finding the Fourth Proportional to 1,245.36, 1,855.90 and 1,207.82

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Solution

The fourth proportional to 1,245.36, 1,855.90 and 1,207.82 is: 1,799.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.36 : 1,855.90 = 1,207.82 : x
  2. Step 2: Convert to fraction form
    1,245.36/1,855.90 = 1,207.82/x
  3. Step 3: Cross multiply
    1,245.36x = 1,855.90 × 1,207.82
  4. Step 4: Simplify right side
    1,245.36x = 2,241,593.14
  5. Step 5: Solve for x
    x = 2,241,593.14/1,245.36
  6. Step 6: Final answer
    x = 1,799.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.