Home / 1,317.02-1,817.46-727.49

Finding the Fourth Proportional to 1,317.02, 1,817.46 and 727.49

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Solution

The fourth proportional to 1,317.02, 1,817.46 and 727.49 is: 1,003.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.02 : 1,817.46 = 727.49 : x
  2. Step 2: Convert to fraction form
    1,317.02/1,817.46 = 727.49/x
  3. Step 3: Cross multiply
    1,317.02x = 1,817.46 × 727.49
  4. Step 4: Simplify right side
    1,317.02x = 1,322,183.98
  5. Step 5: Solve for x
    x = 1,322,183.98/1,317.02
  6. Step 6: Final answer
    x = 1,003.92

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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.