Home / 2,790.13-4,180.39-1,966.67

Finding the Fourth Proportional to 2,790.13, 4,180.39 and 1,966.67

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Solution

The fourth proportional to 2,790.13, 4,180.39 and 1,966.67 is: 2,946.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.13 : 4,180.39 = 1,966.67 : x
  2. Step 2: Convert to fraction form
    2,790.13/4,180.39 = 1,966.67/x
  3. Step 3: Cross multiply
    2,790.13x = 4,180.39 × 1,966.67
  4. Step 4: Simplify right side
    2,790.13x = 8,221,447.60
  5. Step 5: Solve for x
    x = 8,221,447.60/2,790.13
  6. Step 6: Final answer
    x = 2,946.62

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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.