Home / 3,078.79-4,617.97-1,229.40

Finding the Fourth Proportional to 3,078.79, 4,617.97 and 1,229.40

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Solution

The fourth proportional to 3,078.79, 4,617.97 and 1,229.40 is: 1,844.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.79 : 4,617.97 = 1,229.40 : x
  2. Step 2: Convert to fraction form
    3,078.79/4,617.97 = 1,229.40/x
  3. Step 3: Cross multiply
    3,078.79x = 4,617.97 × 1,229.40
  4. Step 4: Simplify right side
    3,078.79x = 5,677,329.24
  5. Step 5: Solve for x
    x = 5,677,329.24/3,078.79
  6. Step 6: Final answer
    x = 1,844.01

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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.