Home / 1,204.82-1,665.09-1,087.70

Finding the Fourth Proportional to 1,204.82, 1,665.09 and 1,087.70

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Solution

The fourth proportional to 1,204.82, 1,665.09 and 1,087.70 is: 1,503.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,204.82 : 1,665.09 = 1,087.70 : x
  2. Step 2: Convert to fraction form
    1,204.82/1,665.09 = 1,087.70/x
  3. Step 3: Cross multiply
    1,204.82x = 1,665.09 × 1,087.70
  4. Step 4: Simplify right side
    1,204.82x = 1,811,118.39
  5. Step 5: Solve for x
    x = 1,811,118.39/1,204.82
  6. Step 6: Final answer
    x = 1,503.23

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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.