Home / 2,786.48-4,180.26-1,400.12

Finding the Fourth Proportional to 2,786.48, 4,180.26 and 1,400.12

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Solution

The fourth proportional to 2,786.48, 4,180.26 and 1,400.12 is: 2,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.48 : 4,180.26 = 1,400.12 : x
  2. Step 2: Convert to fraction form
    2,786.48/4,180.26 = 1,400.12/x
  3. Step 3: Cross multiply
    2,786.48x = 4,180.26 × 1,400.12
  4. Step 4: Simplify right side
    2,786.48x = 5,852,865.63
  5. Step 5: Solve for x
    x = 5,852,865.63/2,786.48
  6. Step 6: Final answer
    x = 2,100.45

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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.