Home / 2,150.45-3,221.11-1,225.53

Finding the Fourth Proportional to 2,150.45, 3,221.11 and 1,225.53

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Solution

The fourth proportional to 2,150.45, 3,221.11 and 1,225.53 is: 1,835.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.45 : 3,221.11 = 1,225.53 : x
  2. Step 2: Convert to fraction form
    2,150.45/3,221.11 = 1,225.53/x
  3. Step 3: Cross multiply
    2,150.45x = 3,221.11 × 1,225.53
  4. Step 4: Simplify right side
    2,150.45x = 3,947,544.71
  5. Step 5: Solve for x
    x = 3,947,544.71/2,150.45
  6. Step 6: Final answer
    x = 1,835.69

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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.