Home / 1,272.56-1,751.94-1,106.68

Finding the Fourth Proportional to 1,272.56, 1,751.94 and 1,106.68

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Solution

The fourth proportional to 1,272.56, 1,751.94 and 1,106.68 is: 1,523.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.56 : 1,751.94 = 1,106.68 : x
  2. Step 2: Convert to fraction form
    1,272.56/1,751.94 = 1,106.68/x
  3. Step 3: Cross multiply
    1,272.56x = 1,751.94 × 1,106.68
  4. Step 4: Simplify right side
    1,272.56x = 1,938,839.66
  5. Step 5: Solve for x
    x = 1,938,839.66/1,272.56
  6. Step 6: Final answer
    x = 1,523.57

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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.