Home / 2,145.69-3,212.06-1,940.36

Finding the Fourth Proportional to 2,145.69, 3,212.06 and 1,940.36

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Solution

The fourth proportional to 2,145.69, 3,212.06 and 1,940.36 is: 2,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.69 : 3,212.06 = 1,940.36 : x
  2. Step 2: Convert to fraction form
    2,145.69/3,212.06 = 1,940.36/x
  3. Step 3: Cross multiply
    2,145.69x = 3,212.06 × 1,940.36
  4. Step 4: Simplify right side
    2,145.69x = 6,232,526.98
  5. Step 5: Solve for x
    x = 6,232,526.98/2,145.69
  6. Step 6: Final answer
    x = 2,904.67

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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.