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Finding the Fourth Proportional to 3,879.63, 5,819.45 and 957.89

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Solution

The fourth proportional to 3,879.63, 5,819.45 and 957.89 is: 1,436.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.63 : 5,819.45 = 957.89 : x
  2. Step 2: Convert to fraction form
    3,879.63/5,819.45 = 957.89/x
  3. Step 3: Cross multiply
    3,879.63x = 5,819.45 × 957.89
  4. Step 4: Simplify right side
    3,879.63x = 5,574,402.72
  5. Step 5: Solve for x
    x = 5,574,402.72/3,879.63
  6. Step 6: Final answer
    x = 1,436.84

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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.