Home / 2,109.88-2,911.44-1,322.56

Finding the Fourth Proportional to 2,109.88, 2,911.44 and 1,322.56

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Solution

The fourth proportional to 2,109.88, 2,911.44 and 1,322.56 is: 1,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109.88 : 2,911.44 = 1,322.56 : x
  2. Step 2: Convert to fraction form
    2,109.88/2,911.44 = 1,322.56/x
  3. Step 3: Cross multiply
    2,109.88x = 2,911.44 × 1,322.56
  4. Step 4: Simplify right side
    2,109.88x = 3,850,554.09
  5. Step 5: Solve for x
    x = 3,850,554.09/2,109.88
  6. Step 6: Final answer
    x = 1,825.01

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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.