Home / 2,778.13-4,168.41-1,218.48

Finding the Fourth Proportional to 2,778.13, 4,168.41 and 1,218.48

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Solution

The fourth proportional to 2,778.13, 4,168.41 and 1,218.48 is: 1,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.13 : 4,168.41 = 1,218.48 : x
  2. Step 2: Convert to fraction form
    2,778.13/4,168.41 = 1,218.48/x
  3. Step 3: Cross multiply
    2,778.13x = 4,168.41 × 1,218.48
  4. Step 4: Simplify right side
    2,778.13x = 5,079,124.22
  5. Step 5: Solve for x
    x = 5,079,124.22/2,778.13
  6. Step 6: Final answer
    x = 1,828.25

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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.