Home / 2,638.14-3,948.99-1,945.59

Finding the Fourth Proportional to 2,638.14, 3,948.99 and 1,945.59

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Solution

The fourth proportional to 2,638.14, 3,948.99 and 1,945.59 is: 2,912.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.14 : 3,948.99 = 1,945.59 : x
  2. Step 2: Convert to fraction form
    2,638.14/3,948.99 = 1,945.59/x
  3. Step 3: Cross multiply
    2,638.14x = 3,948.99 × 1,945.59
  4. Step 4: Simplify right side
    2,638.14x = 7,683,115.45
  5. Step 5: Solve for x
    x = 7,683,115.45/2,638.14
  6. Step 6: Final answer
    x = 2,912.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.