Home / 1,966.26-2,949.36-668.64

Finding the Fourth Proportional to 1,966.26, 2,949.36 and 668.64

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Solution

The fourth proportional to 1,966.26, 2,949.36 and 668.64 is: 1,002.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.26 : 2,949.36 = 668.64 : x
  2. Step 2: Convert to fraction form
    1,966.26/2,949.36 = 668.64/x
  3. Step 3: Cross multiply
    1,966.26x = 2,949.36 × 668.64
  4. Step 4: Simplify right side
    1,966.26x = 1,972,060.07
  5. Step 5: Solve for x
    x = 1,972,060.07/1,966.26
  6. Step 6: Final answer
    x = 1,002.95

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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.