Home / 2,150.22-3,225.75-689.26

Finding the Fourth Proportional to 2,150.22, 3,225.75 and 689.26

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Solution

The fourth proportional to 2,150.22, 3,225.75 and 689.26 is: 1,034.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.22 : 3,225.75 = 689.26 : x
  2. Step 2: Convert to fraction form
    2,150.22/3,225.75 = 689.26/x
  3. Step 3: Cross multiply
    2,150.22x = 3,225.75 × 689.26
  4. Step 4: Simplify right side
    2,150.22x = 2,223,380.45
  5. Step 5: Solve for x
    x = 2,223,380.45/2,150.22
  6. Step 6: Final answer
    x = 1,034.02

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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.