Home / 1,396.12-2,104.08-1,314.04

Finding the Fourth Proportional to 1,396.12, 2,104.08 and 1,314.04

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Solution

The fourth proportional to 1,396.12, 2,104.08 and 1,314.04 is: 1,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.12 : 2,104.08 = 1,314.04 : x
  2. Step 2: Convert to fraction form
    1,396.12/2,104.08 = 1,314.04/x
  3. Step 3: Cross multiply
    1,396.12x = 2,104.08 × 1,314.04
  4. Step 4: Simplify right side
    1,396.12x = 2,764,845.28
  5. Step 5: Solve for x
    x = 2,764,845.28/1,396.12
  6. Step 6: Final answer
    x = 1,980.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.