Home / 1,395.73-1,918.08-1,331.54

Finding the Fourth Proportional to 1,395.73, 1,918.08 and 1,331.54

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Solution

The fourth proportional to 1,395.73, 1,918.08 and 1,331.54 is: 1,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.73 : 1,918.08 = 1,331.54 : x
  2. Step 2: Convert to fraction form
    1,395.73/1,918.08 = 1,331.54/x
  3. Step 3: Cross multiply
    1,395.73x = 1,918.08 × 1,331.54
  4. Step 4: Simplify right side
    1,395.73x = 2,553,997.85
  5. Step 5: Solve for x
    x = 2,553,997.85/1,395.73
  6. Step 6: Final answer
    x = 1,829.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.