Home / 2,419.75-3,339.39-1,372.15

Finding the Fourth Proportional to 2,419.75, 3,339.39 and 1,372.15

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Solution

The fourth proportional to 2,419.75, 3,339.39 and 1,372.15 is: 1,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.75 : 3,339.39 = 1,372.15 : x
  2. Step 2: Convert to fraction form
    2,419.75/3,339.39 = 1,372.15/x
  3. Step 3: Cross multiply
    2,419.75x = 3,339.39 × 1,372.15
  4. Step 4: Simplify right side
    2,419.75x = 4,582,143.99
  5. Step 5: Solve for x
    x = 4,582,143.99/2,419.75
  6. Step 6: Final answer
    x = 1,893.64

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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.