Home / 2,811.20-4,213.95-1,168.65

Finding the Fourth Proportional to 2,811.20, 4,213.95 and 1,168.65

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Solution

The fourth proportional to 2,811.20, 4,213.95 and 1,168.65 is: 1,751.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.20 : 4,213.95 = 1,168.65 : x
  2. Step 2: Convert to fraction form
    2,811.20/4,213.95 = 1,168.65/x
  3. Step 3: Cross multiply
    2,811.20x = 4,213.95 × 1,168.65
  4. Step 4: Simplify right side
    2,811.20x = 4,924,632.67
  5. Step 5: Solve for x
    x = 4,924,632.67/2,811.20
  6. Step 6: Final answer
    x = 1,751.79

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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.