Home / 1,226.03-1,690.78-945.83

Finding the Fourth Proportional to 1,226.03, 1,690.78 and 945.83

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Solution

The fourth proportional to 1,226.03, 1,690.78 and 945.83 is: 1,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226.03 : 1,690.78 = 945.83 : x
  2. Step 2: Convert to fraction form
    1,226.03/1,690.78 = 945.83/x
  3. Step 3: Cross multiply
    1,226.03x = 1,690.78 × 945.83
  4. Step 4: Simplify right side
    1,226.03x = 1,599,190.45
  5. Step 5: Solve for x
    x = 1,599,190.45/1,226.03
  6. Step 6: Final answer
    x = 1,304.36

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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.