Home / 1,211.24-1,815.94-625.61

Finding the Fourth Proportional to 1,211.24, 1,815.94 and 625.61

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Solution

The fourth proportional to 1,211.24, 1,815.94 and 625.61 is: 937.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.24 : 1,815.94 = 625.61 : x
  2. Step 2: Convert to fraction form
    1,211.24/1,815.94 = 625.61/x
  3. Step 3: Cross multiply
    1,211.24x = 1,815.94 × 625.61
  4. Step 4: Simplify right side
    1,211.24x = 1,136,058.02
  5. Step 5: Solve for x
    x = 1,136,058.02/1,211.24
  6. Step 6: Final answer
    x = 937.93

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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.