Home / 2,025.30-3,037.30-638.28

Finding the Fourth Proportional to 2,025.30, 3,037.30 and 638.28

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Solution

The fourth proportional to 2,025.30, 3,037.30 and 638.28 is: 957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.30 : 3,037.30 = 638.28 : x
  2. Step 2: Convert to fraction form
    2,025.30/3,037.30 = 638.28/x
  3. Step 3: Cross multiply
    2,025.30x = 3,037.30 × 638.28
  4. Step 4: Simplify right side
    2,025.30x = 1,938,646.25
  5. Step 5: Solve for x
    x = 1,938,646.25/2,025.30
  6. Step 6: Final answer
    x = 957.21

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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.