Home / 1,223.98-1,836.24-391.03

Finding the Fourth Proportional to 1,223.98, 1,836.24 and 391.03

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Solution

The fourth proportional to 1,223.98, 1,836.24 and 391.03 is: 586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.98 : 1,836.24 = 391.03 : x
  2. Step 2: Convert to fraction form
    1,223.98/1,836.24 = 391.03/x
  3. Step 3: Cross multiply
    1,223.98x = 1,836.24 × 391.03
  4. Step 4: Simplify right side
    1,223.98x = 718,024.93
  5. Step 5: Solve for x
    x = 718,024.93/1,223.98
  6. Step 6: Final answer
    x = 586.63

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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.