Home / 2,539.15-3,504.01-1,420.09

Finding the Fourth Proportional to 2,539.15, 3,504.01 and 1,420.09

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Solution

The fourth proportional to 2,539.15, 3,504.01 and 1,420.09 is: 1,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.15 : 3,504.01 = 1,420.09 : x
  2. Step 2: Convert to fraction form
    2,539.15/3,504.01 = 1,420.09/x
  3. Step 3: Cross multiply
    2,539.15x = 3,504.01 × 1,420.09
  4. Step 4: Simplify right side
    2,539.15x = 4,975,997.25
  5. Step 5: Solve for x
    x = 4,975,997.25/2,539.15
  6. Step 6: Final answer
    x = 1,959.71

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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.