Home / 5,418.39-8,127.57-1,314.39

Finding the Fourth Proportional to 5,418.39, 8,127.57 and 1,314.39

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Solution

The fourth proportional to 5,418.39, 8,127.57 and 1,314.39 is: 1,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.39 : 8,127.57 = 1,314.39 : x
  2. Step 2: Convert to fraction form
    5,418.39/8,127.57 = 1,314.39/x
  3. Step 3: Cross multiply
    5,418.39x = 8,127.57 × 1,314.39
  4. Step 4: Simplify right side
    5,418.39x = 10,682,796.73
  5. Step 5: Solve for x
    x = 10,682,796.73/5,418.39
  6. Step 6: Final answer
    x = 1,971.58

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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.