Home / 2,825.46-4,238.91-1,420.74

Finding the Fourth Proportional to 2,825.46, 4,238.91 and 1,420.74

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Solution

The fourth proportional to 2,825.46, 4,238.91 and 1,420.74 is: 2,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.46 : 4,238.91 = 1,420.74 : x
  2. Step 2: Convert to fraction form
    2,825.46/4,238.91 = 1,420.74/x
  3. Step 3: Cross multiply
    2,825.46x = 4,238.91 × 1,420.74
  4. Step 4: Simplify right side
    2,825.46x = 6,022,388.99
  5. Step 5: Solve for x
    x = 6,022,388.99/2,825.46
  6. Step 6: Final answer
    x = 2,131.47

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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.