Home / 2,539.75-3,504.72-1,420.75

Finding the Fourth Proportional to 2,539.75, 3,504.72 and 1,420.75

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Solution

The fourth proportional to 2,539.75, 3,504.72 and 1,420.75 is: 1,960.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.75 : 3,504.72 = 1,420.75 : x
  2. Step 2: Convert to fraction form
    2,539.75/3,504.72 = 1,420.75/x
  3. Step 3: Cross multiply
    2,539.75x = 3,504.72 × 1,420.75
  4. Step 4: Simplify right side
    2,539.75x = 4,979,330.94
  5. Step 5: Solve for x
    x = 4,979,330.94/2,539.75
  6. Step 6: Final answer
    x = 1,960.56

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1.5x scale

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.