Home / 2,025.57-3,038.38-638.87

Finding the Fourth Proportional to 2,025.57, 3,038.38 and 638.87

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Solution

The fourth proportional to 2,025.57, 3,038.38 and 638.87 is: 958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,025.57 : 3,038.38 = 638.87 : x
  2. Step 2: Convert to fraction form
    2,025.57/3,038.38 = 638.87/x
  3. Step 3: Cross multiply
    2,025.57x = 3,038.38 × 638.87
  4. Step 4: Simplify right side
    2,025.57x = 1,941,135.83
  5. Step 5: Solve for x
    x = 1,941,135.83/2,025.57
  6. Step 6: Final answer
    x = 958.32

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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.