Home / 1,243.24-1,715.41-845.22

Finding the Fourth Proportional to 1,243.24, 1,715.41 and 845.22

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Solution

The fourth proportional to 1,243.24, 1,715.41 and 845.22 is: 1,166.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.24 : 1,715.41 = 845.22 : x
  2. Step 2: Convert to fraction form
    1,243.24/1,715.41 = 845.22/x
  3. Step 3: Cross multiply
    1,243.24x = 1,715.41 × 845.22
  4. Step 4: Simplify right side
    1,243.24x = 1,449,898.84
  5. Step 5: Solve for x
    x = 1,449,898.84/1,243.24
  6. Step 6: Final answer
    x = 1,166.23

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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.