Home / 2,104.09-2,904.86-1,396.90

Finding the Fourth Proportional to 2,104.09, 2,904.86 and 1,396.90

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Solution

The fourth proportional to 2,104.09, 2,904.86 and 1,396.90 is: 1,928.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.09 : 2,904.86 = 1,396.90 : x
  2. Step 2: Convert to fraction form
    2,104.09/2,904.86 = 1,396.90/x
  3. Step 3: Cross multiply
    2,104.09x = 2,904.86 × 1,396.90
  4. Step 4: Simplify right side
    2,104.09x = 4,057,798.93
  5. Step 5: Solve for x
    x = 4,057,798.93/2,104.09
  6. Step 6: Final answer
    x = 1,928.53

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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.