Home / 2,746.90-3,789.36-1,961.42

Finding the Fourth Proportional to 2,746.90, 3,789.36 and 1,961.42

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Solution

The fourth proportional to 2,746.90, 3,789.36 and 1,961.42 is: 2,705.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,746.90 : 3,789.36 = 1,961.42 : x
  2. Step 2: Convert to fraction form
    2,746.90/3,789.36 = 1,961.42/x
  3. Step 3: Cross multiply
    2,746.90x = 3,789.36 × 1,961.42
  4. Step 4: Simplify right side
    2,746.90x = 7,432,526.49
  5. Step 5: Solve for x
    x = 7,432,526.49/2,746.90
  6. Step 6: Final answer
    x = 2,705.79

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1.5x scale

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.