Home / 2,017.20-3,025.92-630.78

Finding the Fourth Proportional to 2,017.20, 3,025.92 and 630.78

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Solution

The fourth proportional to 2,017.20, 3,025.92 and 630.78 is: 946.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,017.20 : 3,025.92 = 630.78 : x
  2. Step 2: Convert to fraction form
    2,017.20/3,025.92 = 630.78/x
  3. Step 3: Cross multiply
    2,017.20x = 3,025.92 × 630.78
  4. Step 4: Simplify right side
    2,017.20x = 1,908,689.82
  5. Step 5: Solve for x
    x = 1,908,689.82/2,017.20
  6. Step 6: Final answer
    x = 946.21

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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.