Home / 3,078.94-4,618.43-1,230.21

Finding the Fourth Proportional to 3,078.94, 4,618.43 and 1,230.21

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Solution

The fourth proportional to 3,078.94, 4,618.43 and 1,230.21 is: 1,845.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.94 : 4,618.43 = 1,230.21 : x
  2. Step 2: Convert to fraction form
    3,078.94/4,618.43 = 1,230.21/x
  3. Step 3: Cross multiply
    3,078.94x = 4,618.43 × 1,230.21
  4. Step 4: Simplify right side
    3,078.94x = 5,681,638.77
  5. Step 5: Solve for x
    x = 5,681,638.77/3,078.94
  6. Step 6: Final answer
    x = 1,845.32

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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.