Home / 2,722.60-4,088.70-2,107.80

Finding the Fourth Proportional to 2,722.60, 4,088.70 and 2,107.80

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Solution

The fourth proportional to 2,722.60, 4,088.70 and 2,107.80 is: 3,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.60 : 4,088.70 = 2,107.80 : x
  2. Step 2: Convert to fraction form
    2,722.60/4,088.70 = 2,107.80/x
  3. Step 3: Cross multiply
    2,722.60x = 4,088.70 × 2,107.80
  4. Step 4: Simplify right side
    2,722.60x = 8,618,161.86
  5. Step 5: Solve for x
    x = 8,618,161.86/2,722.60
  6. Step 6: Final answer
    x = 3,165.42

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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.