Home / 2,836.99-4,247.16-2,109.79

Finding the Fourth Proportional to 2,836.99, 4,247.16 and 2,109.79

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Solution

The fourth proportional to 2,836.99, 4,247.16 and 2,109.79 is: 3,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.99 : 4,247.16 = 2,109.79 : x
  2. Step 2: Convert to fraction form
    2,836.99/4,247.16 = 2,109.79/x
  3. Step 3: Cross multiply
    2,836.99x = 4,247.16 × 2,109.79
  4. Step 4: Simplify right side
    2,836.99x = 8,960,615.70
  5. Step 5: Solve for x
    x = 8,960,615.70/2,836.99
  6. Step 6: Final answer
    x = 3,158.49

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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.