Home / 3,042.79-4,199.51-2,855.18

Finding the Fourth Proportional to 3,042.79, 4,199.51 and 2,855.18

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Solution

The fourth proportional to 3,042.79, 4,199.51 and 2,855.18 is: 3,940.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.79 : 4,199.51 = 2,855.18 : x
  2. Step 2: Convert to fraction form
    3,042.79/4,199.51 = 2,855.18/x
  3. Step 3: Cross multiply
    3,042.79x = 4,199.51 × 2,855.18
  4. Step 4: Simplify right side
    3,042.79x = 11,990,356.96
  5. Step 5: Solve for x
    x = 11,990,356.96/3,042.79
  6. Step 6: Final answer
    x = 3,940.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.