Home / 1,974.78-2,725.08-1,228.71

Finding the Fourth Proportional to 1,974.78, 2,725.08 and 1,228.71

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Solution

The fourth proportional to 1,974.78, 2,725.08 and 1,228.71 is: 1,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.78 : 2,725.08 = 1,228.71 : x
  2. Step 2: Convert to fraction form
    1,974.78/2,725.08 = 1,228.71/x
  3. Step 3: Cross multiply
    1,974.78x = 2,725.08 × 1,228.71
  4. Step 4: Simplify right side
    1,974.78x = 3,348,333.05
  5. Step 5: Solve for x
    x = 3,348,333.05/1,974.78
  6. Step 6: Final answer
    x = 1,695.55

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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.