Home / 2,155.29-2,974.41-1,211.28

Finding the Fourth Proportional to 2,155.29, 2,974.41 and 1,211.28

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Solution

The fourth proportional to 2,155.29, 2,974.41 and 1,211.28 is: 1,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.29 : 2,974.41 = 1,211.28 : x
  2. Step 2: Convert to fraction form
    2,155.29/2,974.41 = 1,211.28/x
  3. Step 3: Cross multiply
    2,155.29x = 2,974.41 × 1,211.28
  4. Step 4: Simplify right side
    2,155.29x = 3,602,843.34
  5. Step 5: Solve for x
    x = 3,602,843.34/2,155.29
  6. Step 6: Final answer
    x = 1,671.63

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.