Home / 2,025.21-3,037.88-638.56

Finding the Fourth Proportional to 2,025.21, 3,037.88 and 638.56

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Solution

The fourth proportional to 2,025.21, 3,037.88 and 638.56 is: 957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.21 : 3,037.88 = 638.56 : x
  2. Step 2: Convert to fraction form
    2,025.21/3,037.88 = 638.56/x
  3. Step 3: Cross multiply
    2,025.21x = 3,037.88 × 638.56
  4. Step 4: Simplify right side
    2,025.21x = 1,939,863.71
  5. Step 5: Solve for x
    x = 1,939,863.71/2,025.21
  6. Step 6: Final answer
    x = 957.86

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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.