Home / 5,789.80-7,987.44-3,902.60

Finding the Fourth Proportional to 5,789.80, 7,987.44 and 3,902.60

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Solution

The fourth proportional to 5,789.80, 7,987.44 and 3,902.60 is: 5,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.80 : 7,987.44 = 3,902.60 : x
  2. Step 2: Convert to fraction form
    5,789.80/7,987.44 = 3,902.60/x
  3. Step 3: Cross multiply
    5,789.80x = 7,987.44 × 3,902.60
  4. Step 4: Simplify right side
    5,789.80x = 31,171,783.34
  5. Step 5: Solve for x
    x = 31,171,783.34/5,789.80
  6. Step 6: Final answer
    x = 5,383.91

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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.