Home / 2,025.65-3,038.97-639.12

Finding the Fourth Proportional to 2,025.65, 3,038.97 and 639.12

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Solution

The fourth proportional to 2,025.65, 3,038.97 and 639.12 is: 958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.65 : 3,038.97 = 639.12 : x
  2. Step 2: Convert to fraction form
    2,025.65/3,038.97 = 639.12/x
  3. Step 3: Cross multiply
    2,025.65x = 3,038.97 × 639.12
  4. Step 4: Simplify right side
    2,025.65x = 1,942,266.51
  5. Step 5: Solve for x
    x = 1,942,266.51/2,025.65
  6. Step 6: Final answer
    x = 958.84

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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.