Home / 3,042.43-4,198.56-1,645.18

Finding the Fourth Proportional to 3,042.43, 4,198.56 and 1,645.18

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Solution

The fourth proportional to 3,042.43, 4,198.56 and 1,645.18 is: 2,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.43 : 4,198.56 = 1,645.18 : x
  2. Step 2: Convert to fraction form
    3,042.43/4,198.56 = 1,645.18/x
  3. Step 3: Cross multiply
    3,042.43x = 4,198.56 × 1,645.18
  4. Step 4: Simplify right side
    3,042.43x = 6,907,386.94
  5. Step 5: Solve for x
    x = 6,907,386.94/3,042.43
  6. Step 6: Final answer
    x = 2,270.35

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Double scale
Find fourth proportional to 3,043.43, 4,199.94 and 1,646.18
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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.