Home / 3,976.80-5,485.53-2,560.02

Finding the Fourth Proportional to 3,976.80, 5,485.53 and 2,560.02

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Solution

The fourth proportional to 3,976.80, 5,485.53 and 2,560.02 is: 3,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.80 : 5,485.53 = 2,560.02 : x
  2. Step 2: Convert to fraction form
    3,976.80/5,485.53 = 2,560.02/x
  3. Step 3: Cross multiply
    3,976.80x = 5,485.53 × 2,560.02
  4. Step 4: Simplify right side
    3,976.80x = 14,043,066.51
  5. Step 5: Solve for x
    x = 14,043,066.51/3,976.80
  6. Step 6: Final answer
    x = 3,531.25

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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.