Home / 3,121.63-4,686.04-1,585.87

Finding the Fourth Proportional to 3,121.63, 4,686.04 and 1,585.87

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Solution

The fourth proportional to 3,121.63, 4,686.04 and 1,585.87 is: 2,380.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.63 : 4,686.04 = 1,585.87 : x
  2. Step 2: Convert to fraction form
    3,121.63/4,686.04 = 1,585.87/x
  3. Step 3: Cross multiply
    3,121.63x = 4,686.04 × 1,585.87
  4. Step 4: Simplify right side
    3,121.63x = 7,431,450.25
  5. Step 5: Solve for x
    x = 7,431,450.25/3,121.63
  6. Step 6: Final answer
    x = 2,380.63

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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.