Home / 3,973.24-5,485.08-2,380.78

Finding the Fourth Proportional to 3,973.24, 5,485.08 and 2,380.78

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Solution

The fourth proportional to 3,973.24, 5,485.08 and 2,380.78 is: 3,286.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,973.24 : 5,485.08 = 2,380.78 : x
  2. Step 2: Convert to fraction form
    3,973.24/5,485.08 = 2,380.78/x
  3. Step 3: Cross multiply
    3,973.24x = 5,485.08 × 2,380.78
  4. Step 4: Simplify right side
    3,973.24x = 13,058,768.76
  5. Step 5: Solve for x
    x = 13,058,768.76/3,973.24
  6. Step 6: Final answer
    x = 3,286.68

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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.