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Finding the Fourth Proportional to 3,808.76, 5,708.26 and 3,313.09

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Solution

The fourth proportional to 3,808.76, 5,708.26 and 3,313.09 is: 4,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.76 : 5,708.26 = 3,313.09 : x
  2. Step 2: Convert to fraction form
    3,808.76/5,708.26 = 3,313.09/x
  3. Step 3: Cross multiply
    3,808.76x = 5,708.26 × 3,313.09
  4. Step 4: Simplify right side
    3,808.76x = 18,911,977.71
  5. Step 5: Solve for x
    x = 18,911,977.71/3,808.76
  6. Step 6: Final answer
    x = 4,965.39

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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.