Home / 1,395.15-2,093.07-985.09

Finding the Fourth Proportional to 1,395.15, 2,093.07 and 985.09

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Solution

The fourth proportional to 1,395.15, 2,093.07 and 985.09 is: 1,477.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.15 : 2,093.07 = 985.09 : x
  2. Step 2: Convert to fraction form
    1,395.15/2,093.07 = 985.09/x
  3. Step 3: Cross multiply
    1,395.15x = 2,093.07 × 985.09
  4. Step 4: Simplify right side
    1,395.15x = 2,061,862.33
  5. Step 5: Solve for x
    x = 2,061,862.33/1,395.15
  6. Step 6: Final answer
    x = 1,477.88

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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.