Home / 3,918.73-5,878.43-1,285.44

Finding the Fourth Proportional to 3,918.73, 5,878.43 and 1,285.44

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Solution

The fourth proportional to 3,918.73, 5,878.43 and 1,285.44 is: 1,928.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.73 : 5,878.43 = 1,285.44 : x
  2. Step 2: Convert to fraction form
    3,918.73/5,878.43 = 1,285.44/x
  3. Step 3: Cross multiply
    3,918.73x = 5,878.43 × 1,285.44
  4. Step 4: Simplify right side
    3,918.73x = 7,556,395.92
  5. Step 5: Solve for x
    x = 7,556,395.92/3,918.73
  6. Step 6: Final answer
    x = 1,928.28

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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.