Home / 3,781.60-5,219.07-2,289.48

Finding the Fourth Proportional to 3,781.60, 5,219.07 and 2,289.48

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Solution

The fourth proportional to 3,781.60, 5,219.07 and 2,289.48 is: 3,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.60 : 5,219.07 = 2,289.48 : x
  2. Step 2: Convert to fraction form
    3,781.60/5,219.07 = 2,289.48/x
  3. Step 3: Cross multiply
    3,781.60x = 5,219.07 × 2,289.48
  4. Step 4: Simplify right side
    3,781.60x = 11,948,918.84
  5. Step 5: Solve for x
    x = 11,948,918.84/3,781.60
  6. Step 6: Final answer
    x = 3,159.76

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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.