Home / 3,418.25-5,127.48-1,078.28

Finding the Fourth Proportional to 3,418.25, 5,127.48 and 1,078.28

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Solution

The fourth proportional to 3,418.25, 5,127.48 and 1,078.28 is: 1,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.25 : 5,127.48 = 1,078.28 : x
  2. Step 2: Convert to fraction form
    3,418.25/5,127.48 = 1,078.28/x
  3. Step 3: Cross multiply
    3,418.25x = 5,127.48 × 1,078.28
  4. Step 4: Simplify right side
    3,418.25x = 5,528,840.75
  5. Step 5: Solve for x
    x = 5,528,840.75/3,418.25
  6. Step 6: Final answer
    x = 1,617.45

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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.