Home / 1,317.02-1,976.73-668.24

Finding the Fourth Proportional to 1,317.02, 1,976.73 and 668.24

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Solution

The fourth proportional to 1,317.02, 1,976.73 and 668.24 is: 1,002.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.02 : 1,976.73 = 668.24 : x
  2. Step 2: Convert to fraction form
    1,317.02/1,976.73 = 668.24/x
  3. Step 3: Cross multiply
    1,317.02x = 1,976.73 × 668.24
  4. Step 4: Simplify right side
    1,317.02x = 1,320,930.06
  5. Step 5: Solve for x
    x = 1,320,930.06/1,317.02
  6. Step 6: Final answer
    x = 1,002.97

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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.