Home / 2,540.05-3,505.26-1,420.99

Finding the Fourth Proportional to 2,540.05, 3,505.26 and 1,420.99

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Solution

The fourth proportional to 2,540.05, 3,505.26 and 1,420.99 is: 1,960.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.05 : 3,505.26 = 1,420.99 : x
  2. Step 2: Convert to fraction form
    2,540.05/3,505.26 = 1,420.99/x
  3. Step 3: Cross multiply
    2,540.05x = 3,505.26 × 1,420.99
  4. Step 4: Simplify right side
    2,540.05x = 4,980,939.41
  5. Step 5: Solve for x
    x = 4,980,939.41/2,540.05
  6. Step 6: Final answer
    x = 1,960.96

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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.