Home / 1,968.26-2,715.57-1,212.32

Finding the Fourth Proportional to 1,968.26, 2,715.57 and 1,212.32

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Solution

The fourth proportional to 1,968.26, 2,715.57 and 1,212.32 is: 1,672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.26 : 2,715.57 = 1,212.32 : x
  2. Step 2: Convert to fraction form
    1,968.26/2,715.57 = 1,212.32/x
  3. Step 3: Cross multiply
    1,968.26x = 2,715.57 × 1,212.32
  4. Step 4: Simplify right side
    1,968.26x = 3,292,126.24
  5. Step 5: Solve for x
    x = 3,292,126.24/1,968.26
  6. Step 6: Final answer
    x = 1,672.61

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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.