Home / 1,231.17-1,847.63-683.79

Finding the Fourth Proportional to 1,231.17, 1,847.63 and 683.79

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Solution

The fourth proportional to 1,231.17, 1,847.63 and 683.79 is: 1,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.17 : 1,847.63 = 683.79 : x
  2. Step 2: Convert to fraction form
    1,231.17/1,847.63 = 683.79/x
  3. Step 3: Cross multiply
    1,231.17x = 1,847.63 × 683.79
  4. Step 4: Simplify right side
    1,231.17x = 1,263,390.92
  5. Step 5: Solve for x
    x = 1,263,390.92/1,231.17
  6. Step 6: Final answer
    x = 1,026.17

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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.