Home / 3,418.65-5,128.38-1,226.79

Finding the Fourth Proportional to 3,418.65, 5,128.38 and 1,226.79

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Solution

The fourth proportional to 3,418.65, 5,128.38 and 1,226.79 is: 1,840.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.65 : 5,128.38 = 1,226.79 : x
  2. Step 2: Convert to fraction form
    3,418.65/5,128.38 = 1,226.79/x
  3. Step 3: Cross multiply
    3,418.65x = 5,128.38 × 1,226.79
  4. Step 4: Simplify right side
    3,418.65x = 6,291,445.30
  5. Step 5: Solve for x
    x = 6,291,445.30/3,418.65
  6. Step 6: Final answer
    x = 1,840.33

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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.