Home / 2,979.60-4,469.40-2,763.60

Finding the Fourth Proportional to 2,979.60, 4,469.40 and 2,763.60

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Solution

The fourth proportional to 2,979.60, 4,469.40 and 2,763.60 is: 4,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.60 : 4,469.40 = 2,763.60 : x
  2. Step 2: Convert to fraction form
    2,979.60/4,469.40 = 2,763.60/x
  3. Step 3: Cross multiply
    2,979.60x = 4,469.40 × 2,763.60
  4. Step 4: Simplify right side
    2,979.60x = 12,351,633.84
  5. Step 5: Solve for x
    x = 12,351,633.84/2,979.60
  6. Step 6: Final answer
    x = 4,145.40

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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.