Home / 3,078.13-4,617.20-2,103.70

Finding the Fourth Proportional to 3,078.13, 4,617.20 and 2,103.70

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Solution

The fourth proportional to 3,078.13, 4,617.20 and 2,103.70 is: 3,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.13 : 4,617.20 = 2,103.70 : x
  2. Step 2: Convert to fraction form
    3,078.13/4,617.20 = 2,103.70/x
  3. Step 3: Cross multiply
    3,078.13x = 4,617.20 × 2,103.70
  4. Step 4: Simplify right side
    3,078.13x = 9,713,203.64
  5. Step 5: Solve for x
    x = 9,713,203.64/3,078.13
  6. Step 6: Final answer
    x = 3,155.55

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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.