Home / 1,930.95-2,661.98-1,371.22

Finding the Fourth Proportional to 1,930.95, 2,661.98 and 1,371.22

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Solution

The fourth proportional to 1,930.95, 2,661.98 and 1,371.22 is: 1,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.95 : 2,661.98 = 1,371.22 : x
  2. Step 2: Convert to fraction form
    1,930.95/2,661.98 = 1,371.22/x
  3. Step 3: Cross multiply
    1,930.95x = 2,661.98 × 1,371.22
  4. Step 4: Simplify right side
    1,930.95x = 3,650,160.22
  5. Step 5: Solve for x
    x = 3,650,160.22/1,930.95
  6. Step 6: Final answer
    x = 1,890.34

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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.