Home / 3,389.78-5,080.14-1,439.54

Finding the Fourth Proportional to 3,389.78, 5,080.14 and 1,439.54

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Solution

The fourth proportional to 3,389.78, 5,080.14 and 1,439.54 is: 2,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.78 : 5,080.14 = 1,439.54 : x
  2. Step 2: Convert to fraction form
    3,389.78/5,080.14 = 1,439.54/x
  3. Step 3: Cross multiply
    3,389.78x = 5,080.14 × 1,439.54
  4. Step 4: Simplify right side
    3,389.78x = 7,313,064.74
  5. Step 5: Solve for x
    x = 7,313,064.74/3,389.78
  6. Step 6: Final answer
    x = 2,157.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.