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Finding the Fourth Proportional to 3,388.77, 4,666.32 and 3,191.49

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Solution

The fourth proportional to 3,388.77, 4,666.32 and 3,191.49 is: 4,394.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.77 : 4,666.32 = 3,191.49 : x
  2. Step 2: Convert to fraction form
    3,388.77/4,666.32 = 3,191.49/x
  3. Step 3: Cross multiply
    3,388.77x = 4,666.32 × 3,191.49
  4. Step 4: Simplify right side
    3,388.77x = 14,892,513.62
  5. Step 5: Solve for x
    x = 14,892,513.62/3,388.77
  6. Step 6: Final answer
    x = 4,394.67

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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.