Home / 1,079.06-1,619.62-668.99

Finding the Fourth Proportional to 1,079.06, 1,619.62 and 668.99

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Solution

The fourth proportional to 1,079.06, 1,619.62 and 668.99 is: 1,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.06 : 1,619.62 = 668.99 : x
  2. Step 2: Convert to fraction form
    1,079.06/1,619.62 = 668.99/x
  3. Step 3: Cross multiply
    1,079.06x = 1,619.62 × 668.99
  4. Step 4: Simplify right side
    1,079.06x = 1,083,511.96
  5. Step 5: Solve for x
    x = 1,083,511.96/1,079.06
  6. Step 6: Final answer
    x = 1,004.13

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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.