Home / 3,120.20-4,666.53-2,775.95

Finding the Fourth Proportional to 3,120.20, 4,666.53 and 2,775.95

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Solution

The fourth proportional to 3,120.20, 4,666.53 and 2,775.95 is: 4,151.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.20 : 4,666.53 = 2,775.95 : x
  2. Step 2: Convert to fraction form
    3,120.20/4,666.53 = 2,775.95/x
  3. Step 3: Cross multiply
    3,120.20x = 4,666.53 × 2,775.95
  4. Step 4: Simplify right side
    3,120.20x = 12,954,053.95
  5. Step 5: Solve for x
    x = 12,954,053.95/3,120.20
  6. Step 6: Final answer
    x = 4,151.67

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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.