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Finding the Fourth Proportional to 2,653.26, 3,980.30 and 804.14

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Solution

The fourth proportional to 2,653.26, 3,980.30 and 804.14 is: 1,206.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.26 : 3,980.30 = 804.14 : x
  2. Step 2: Convert to fraction form
    2,653.26/3,980.30 = 804.14/x
  3. Step 3: Cross multiply
    2,653.26x = 3,980.30 × 804.14
  4. Step 4: Simplify right side
    2,653.26x = 3,200,718.44
  5. Step 5: Solve for x
    x = 3,200,718.44/2,653.26
  6. Step 6: Final answer
    x = 1,206.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.