Home / 2,079.26-3,119.46-846.40

Finding the Fourth Proportional to 2,079.26, 3,119.46 and 846.40

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Solution

The fourth proportional to 2,079.26, 3,119.46 and 846.40 is: 1,269.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.26 : 3,119.46 = 846.40 : x
  2. Step 2: Convert to fraction form
    2,079.26/3,119.46 = 846.40/x
  3. Step 3: Cross multiply
    2,079.26x = 3,119.46 × 846.40
  4. Step 4: Simplify right side
    2,079.26x = 2,640,310.94
  5. Step 5: Solve for x
    x = 2,640,310.94/2,079.26
  6. Step 6: Final answer
    x = 1,269.83

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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.