Home / 2,155.58-2,974.70-1,224.08

Finding the Fourth Proportional to 2,155.58, 2,974.70 and 1,224.08

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Solution

The fourth proportional to 2,155.58, 2,974.70 and 1,224.08 is: 1,689.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.58 : 2,974.70 = 1,224.08 : x
  2. Step 2: Convert to fraction form
    2,155.58/2,974.70 = 1,224.08/x
  3. Step 3: Cross multiply
    2,155.58x = 2,974.70 × 1,224.08
  4. Step 4: Simplify right side
    2,155.58x = 3,641,270.78
  5. Step 5: Solve for x
    x = 3,641,270.78/2,155.58
  6. Step 6: Final answer
    x = 1,689.23

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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.