Home / 2,025.44-3,038.56-638.90

Finding the Fourth Proportional to 2,025.44, 3,038.56 and 638.90

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Solution

The fourth proportional to 2,025.44, 3,038.56 and 638.90 is: 958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.44 : 3,038.56 = 638.90 : x
  2. Step 2: Convert to fraction form
    2,025.44/3,038.56 = 638.90/x
  3. Step 3: Cross multiply
    2,025.44x = 3,038.56 × 638.90
  4. Step 4: Simplify right side
    2,025.44x = 1,941,351.27
  5. Step 5: Solve for x
    x = 1,941,351.27/2,025.44
  6. Step 6: Final answer
    x = 958.48

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1.5x scale

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.