Home / 1,668.12-2,497.68-1,119.12

Finding the Fourth Proportional to 1,668.12, 2,497.68 and 1,119.12

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Solution

The fourth proportional to 1,668.12, 2,497.68 and 1,119.12 is: 1,675.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,668.12 : 2,497.68 = 1,119.12 : x
  2. Step 2: Convert to fraction form
    1,668.12/2,497.68 = 1,119.12/x
  3. Step 3: Cross multiply
    1,668.12x = 2,497.68 × 1,119.12
  4. Step 4: Simplify right side
    1,668.12x = 2,795,203.64
  5. Step 5: Solve for x
    x = 2,795,203.64/1,668.12
  6. Step 6: Final answer
    x = 1,675.66

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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.