Home / 2,938.70-4,383.28-2,734.58

Finding the Fourth Proportional to 2,938.70, 4,383.28 and 2,734.58

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Solution

The fourth proportional to 2,938.70, 4,383.28 and 2,734.58 is: 4,078.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.70 : 4,383.28 = 2,734.58 : x
  2. Step 2: Convert to fraction form
    2,938.70/4,383.28 = 2,734.58/x
  3. Step 3: Cross multiply
    2,938.70x = 4,383.28 × 2,734.58
  4. Step 4: Simplify right side
    2,938.70x = 11,986,429.82
  5. Step 5: Solve for x
    x = 11,986,429.82/2,938.70
  6. Step 6: Final answer
    x = 4,078.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.