Home / 1,968.39-2,950.77-668.96

Finding the Fourth Proportional to 1,968.39, 2,950.77 and 668.96

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Solution

The fourth proportional to 1,968.39, 2,950.77 and 668.96 is: 1,002.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.39 : 2,950.77 = 668.96 : x
  2. Step 2: Convert to fraction form
    1,968.39/2,950.77 = 668.96/x
  3. Step 3: Cross multiply
    1,968.39x = 2,950.77 × 668.96
  4. Step 4: Simplify right side
    1,968.39x = 1,973,932.35
  5. Step 5: Solve for x
    x = 1,973,932.35/1,968.39
  6. Step 6: Final answer
    x = 1,002.82

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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.