Home / 3,105.16-4,657.80-1,025.20

Finding the Fourth Proportional to 3,105.16, 4,657.80 and 1,025.20

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Solution

The fourth proportional to 3,105.16, 4,657.80 and 1,025.20 is: 1,537.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.16 : 4,657.80 = 1,025.20 : x
  2. Step 2: Convert to fraction form
    3,105.16/4,657.80 = 1,025.20/x
  3. Step 3: Cross multiply
    3,105.16x = 4,657.80 × 1,025.20
  4. Step 4: Simplify right side
    3,105.16x = 4,775,176.56
  5. Step 5: Solve for x
    x = 4,775,176.56/3,105.16
  6. Step 6: Final answer
    x = 1,537.82

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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.