Home / 2,940.20-4,057.18-1,891.48

Finding the Fourth Proportional to 2,940.20, 4,057.18 and 1,891.48

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Solution

The fourth proportional to 2,940.20, 4,057.18 and 1,891.48 is: 2,610.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.20 : 4,057.18 = 1,891.48 : x
  2. Step 2: Convert to fraction form
    2,940.20/4,057.18 = 1,891.48/x
  3. Step 3: Cross multiply
    2,940.20x = 4,057.18 × 1,891.48
  4. Step 4: Simplify right side
    2,940.20x = 7,674,074.83
  5. Step 5: Solve for x
    x = 7,674,074.83/2,940.20
  6. Step 6: Final answer
    x = 2,610.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.