Home / 3,290.51-4,540.88-1,798.40

Finding the Fourth Proportional to 3,290.51, 4,540.88 and 1,798.40

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Solution

The fourth proportional to 3,290.51, 4,540.88 and 1,798.40 is: 2,481.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.51 : 4,540.88 = 1,798.40 : x
  2. Step 2: Convert to fraction form
    3,290.51/4,540.88 = 1,798.40/x
  3. Step 3: Cross multiply
    3,290.51x = 4,540.88 × 1,798.40
  4. Step 4: Simplify right side
    3,290.51x = 8,166,334.44
  5. Step 5: Solve for x
    x = 8,166,334.44/3,290.51
  6. Step 6: Final answer
    x = 2,481.78

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Double scale
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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.