Home / 3,070.15-4,604.31-1,121.90

Finding the Fourth Proportional to 3,070.15, 4,604.31 and 1,121.90

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Solution

The fourth proportional to 3,070.15, 4,604.31 and 1,121.90 is: 1,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.15 : 4,604.31 = 1,121.90 : x
  2. Step 2: Convert to fraction form
    3,070.15/4,604.31 = 1,121.90/x
  3. Step 3: Cross multiply
    3,070.15x = 4,604.31 × 1,121.90
  4. Step 4: Simplify right side
    3,070.15x = 5,165,566.68
  5. Step 5: Solve for x
    x = 5,165,566.68/3,070.15
  6. Step 6: Final answer
    x = 1,682.51

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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.