Home / 2,025.56-3,038.80-639.03

Finding the Fourth Proportional to 2,025.56, 3,038.80 and 639.03

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Solution

The fourth proportional to 2,025.56, 3,038.80 and 639.03 is: 958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.56 : 3,038.80 = 639.03 : x
  2. Step 2: Convert to fraction form
    2,025.56/3,038.80 = 639.03/x
  3. Step 3: Cross multiply
    2,025.56x = 3,038.80 × 639.03
  4. Step 4: Simplify right side
    2,025.56x = 1,941,884.36
  5. Step 5: Solve for x
    x = 1,941,884.36/2,025.56
  6. Step 6: Final answer
    x = 958.69

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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.