Home / 2,645.52-3,968.97-1,085.01

Finding the Fourth Proportional to 2,645.52, 3,968.97 and 1,085.01

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Solution

The fourth proportional to 2,645.52, 3,968.97 and 1,085.01 is: 1,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,645.52 : 3,968.97 = 1,085.01 : x
  2. Step 2: Convert to fraction form
    2,645.52/3,968.97 = 1,085.01/x
  3. Step 3: Cross multiply
    2,645.52x = 3,968.97 × 1,085.01
  4. Step 4: Simplify right side
    2,645.52x = 4,306,372.14
  5. Step 5: Solve for x
    x = 4,306,372.14/2,645.52
  6. Step 6: Final answer
    x = 1,627.80

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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.