Home / 1,297.88-1,790.70-1,173.14

Finding the Fourth Proportional to 1,297.88, 1,790.70 and 1,173.14

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Solution

The fourth proportional to 1,297.88, 1,790.70 and 1,173.14 is: 1,618.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297.88 : 1,790.70 = 1,173.14 : x
  2. Step 2: Convert to fraction form
    1,297.88/1,790.70 = 1,173.14/x
  3. Step 3: Cross multiply
    1,297.88x = 1,790.70 × 1,173.14
  4. Step 4: Simplify right side
    1,297.88x = 2,100,741.80
  5. Step 5: Solve for x
    x = 2,100,741.80/1,297.88
  6. Step 6: Final answer
    x = 1,618.59

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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.