Home / 3,946.82-5,445.34-2,620.79

Finding the Fourth Proportional to 3,946.82, 5,445.34 and 2,620.79

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Solution

The fourth proportional to 3,946.82, 5,445.34 and 2,620.79 is: 3,615.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.82 : 5,445.34 = 2,620.79 : x
  2. Step 2: Convert to fraction form
    3,946.82/5,445.34 = 2,620.79/x
  3. Step 3: Cross multiply
    3,946.82x = 5,445.34 × 2,620.79
  4. Step 4: Simplify right side
    3,946.82x = 14,271,058.84
  5. Step 5: Solve for x
    x = 14,271,058.84/3,946.82
  6. Step 6: Final answer
    x = 3,615.84

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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.