Home / 3,781.56-5,219.01-2,289.54

Finding the Fourth Proportional to 3,781.56, 5,219.01 and 2,289.54

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Solution

The fourth proportional to 3,781.56, 5,219.01 and 2,289.54 is: 3,159.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.56 : 5,219.01 = 2,289.54 : x
  2. Step 2: Convert to fraction form
    3,781.56/5,219.01 = 2,289.54/x
  3. Step 3: Cross multiply
    3,781.56x = 5,219.01 × 2,289.54
  4. Step 4: Simplify right side
    3,781.56x = 11,949,132.16
  5. Step 5: Solve for x
    x = 11,949,132.16/3,781.56
  6. Step 6: Final answer
    x = 3,159.84

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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.