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Finding the Fourth Proportional to 1,679.71, 2,319.42 and 1,183.45

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Solution

The fourth proportional to 1,679.71, 2,319.42 and 1,183.45 is: 1,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.71 : 2,319.42 = 1,183.45 : x
  2. Step 2: Convert to fraction form
    1,679.71/2,319.42 = 1,183.45/x
  3. Step 3: Cross multiply
    1,679.71x = 2,319.42 × 1,183.45
  4. Step 4: Simplify right side
    1,679.71x = 2,744,917.60
  5. Step 5: Solve for x
    x = 2,744,917.60/1,679.71
  6. Step 6: Final answer
    x = 1,634.16

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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.