Home / 2,128.20-3,191.77-895.62

Finding the Fourth Proportional to 2,128.20, 3,191.77 and 895.62

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Solution

The fourth proportional to 2,128.20, 3,191.77 and 895.62 is: 1,343.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.20 : 3,191.77 = 895.62 : x
  2. Step 2: Convert to fraction form
    2,128.20/3,191.77 = 895.62/x
  3. Step 3: Cross multiply
    2,128.20x = 3,191.77 × 895.62
  4. Step 4: Simplify right side
    2,128.20x = 2,858,613.05
  5. Step 5: Solve for x
    x = 2,858,613.05/2,128.20
  6. Step 6: Final answer
    x = 1,343.21

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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.