Home / 2,539.38-3,504.68-1,420.75

Finding the Fourth Proportional to 2,539.38, 3,504.68 and 1,420.75

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Solution

The fourth proportional to 2,539.38, 3,504.68 and 1,420.75 is: 1,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.38 : 3,504.68 = 1,420.75 : x
  2. Step 2: Convert to fraction form
    2,539.38/3,504.68 = 1,420.75/x
  3. Step 3: Cross multiply
    2,539.38x = 3,504.68 × 1,420.75
  4. Step 4: Simplify right side
    2,539.38x = 4,979,274.11
  5. Step 5: Solve for x
    x = 4,979,274.11/2,539.38
  6. Step 6: Final answer
    x = 1,960.82

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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.