Home / 1,620.57-2,237.16-1,222.41

Finding the Fourth Proportional to 1,620.57, 2,237.16 and 1,222.41

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Solution

The fourth proportional to 1,620.57, 2,237.16 and 1,222.41 is: 1,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.57 : 2,237.16 = 1,222.41 : x
  2. Step 2: Convert to fraction form
    1,620.57/2,237.16 = 1,222.41/x
  3. Step 3: Cross multiply
    1,620.57x = 2,237.16 × 1,222.41
  4. Step 4: Simplify right side
    1,620.57x = 2,734,726.76
  5. Step 5: Solve for x
    x = 2,734,726.76/1,620.57
  6. Step 6: Final answer
    x = 1,687.51

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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.