Home / 2,780.07-3,834.36-1,940.51

Finding the Fourth Proportional to 2,780.07, 3,834.36 and 1,940.51

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Solution

The fourth proportional to 2,780.07, 3,834.36 and 1,940.51 is: 2,676.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.07 : 3,834.36 = 1,940.51 : x
  2. Step 2: Convert to fraction form
    2,780.07/3,834.36 = 1,940.51/x
  3. Step 3: Cross multiply
    2,780.07x = 3,834.36 × 1,940.51
  4. Step 4: Simplify right side
    2,780.07x = 7,440,594.75
  5. Step 5: Solve for x
    x = 7,440,594.75/2,780.07
  6. Step 6: Final answer
    x = 2,676.41

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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.