Home / 2,795.88-3,858.68-1,911.36

Finding the Fourth Proportional to 2,795.88, 3,858.68 and 1,911.36

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Solution

The fourth proportional to 2,795.88, 3,858.68 and 1,911.36 is: 2,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,795.88 : 3,858.68 = 1,911.36 : x
  2. Step 2: Convert to fraction form
    2,795.88/3,858.68 = 1,911.36/x
  3. Step 3: Cross multiply
    2,795.88x = 3,858.68 × 1,911.36
  4. Step 4: Simplify right side
    2,795.88x = 7,375,326.60
  5. Step 5: Solve for x
    x = 7,375,326.60/2,795.88
  6. Step 6: Final answer
    x = 2,637.93

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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.