Home / 3,976.01-5,485.79-2,485.45

Finding the Fourth Proportional to 3,976.01, 5,485.79 and 2,485.45

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Solution

The fourth proportional to 3,976.01, 5,485.79 and 2,485.45 is: 3,429.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.01 : 5,485.79 = 2,485.45 : x
  2. Step 2: Convert to fraction form
    3,976.01/5,485.79 = 2,485.45/x
  3. Step 3: Cross multiply
    3,976.01x = 5,485.79 × 2,485.45
  4. Step 4: Simplify right side
    3,976.01x = 13,634,616.90
  5. Step 5: Solve for x
    x = 13,634,616.90/3,976.01
  6. Step 6: Final answer
    x = 3,429.22

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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.