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Finding the Fourth Proportional to 1,698.96, 2,346.39 and 1,169.22

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Solution

The fourth proportional to 1,698.96, 2,346.39 and 1,169.22 is: 1,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.96 : 2,346.39 = 1,169.22 : x
  2. Step 2: Convert to fraction form
    1,698.96/2,346.39 = 1,169.22/x
  3. Step 3: Cross multiply
    1,698.96x = 2,346.39 × 1,169.22
  4. Step 4: Simplify right side
    1,698.96x = 2,743,446.12
  5. Step 5: Solve for x
    x = 2,743,446.12/1,698.96
  6. Step 6: Final answer
    x = 1,614.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.