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Finding the Fourth Proportional to 1,582.43, 2,183.79 and 883.80

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Solution

The fourth proportional to 1,582.43, 2,183.79 and 883.80 is: 1,219.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,582.43 : 2,183.79 = 883.80 : x
  2. Step 2: Convert to fraction form
    1,582.43/2,183.79 = 883.80/x
  3. Step 3: Cross multiply
    1,582.43x = 2,183.79 × 883.80
  4. Step 4: Simplify right side
    1,582.43x = 1,930,033.60
  5. Step 5: Solve for x
    x = 1,930,033.60/1,582.43
  6. Step 6: Final answer
    x = 1,219.67

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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.