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Finding the Fourth Proportional to 2,855.54, 4,283.70 and 1,393.68

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Solution

The fourth proportional to 2,855.54, 4,283.70 and 1,393.68 is: 2,090.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.54 : 4,283.70 = 1,393.68 : x
  2. Step 2: Convert to fraction form
    2,855.54/4,283.70 = 1,393.68/x
  3. Step 3: Cross multiply
    2,855.54x = 4,283.70 × 1,393.68
  4. Step 4: Simplify right side
    2,855.54x = 5,970,107.02
  5. Step 5: Solve for x
    x = 5,970,107.02/2,855.54
  6. Step 6: Final answer
    x = 2,090.71

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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.