Home / 2,279.24-3,419.86-1,240

Finding the Fourth Proportional to 2,279.24, 3,419.86 and 1,240

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Solution

The fourth proportional to 2,279.24, 3,419.86 and 1,240 is: 1,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.24 : 3,419.86 = 1,240 : x
  2. Step 2: Convert to fraction form
    2,279.24/3,419.86 = 1,240/x
  3. Step 3: Cross multiply
    2,279.24x = 3,419.86 × 1,240
  4. Step 4: Simplify right side
    2,279.24x = 4,240,626.40
  5. Step 5: Solve for x
    x = 4,240,626.40/2,279.24
  6. Step 6: Final answer
    x = 1,860.54

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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.