Home / 2,025.40-3,037.32-638.44

Finding the Fourth Proportional to 2,025.40, 3,037.32 and 638.44

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Solution

The fourth proportional to 2,025.40, 3,037.32 and 638.44 is: 957.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.40 : 3,037.32 = 638.44 : x
  2. Step 2: Convert to fraction form
    2,025.40/3,037.32 = 638.44/x
  3. Step 3: Cross multiply
    2,025.40x = 3,037.32 × 638.44
  4. Step 4: Simplify right side
    2,025.40x = 1,939,146.58
  5. Step 5: Solve for x
    x = 1,939,146.58/2,025.40
  6. Step 6: Final answer
    x = 957.41

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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.