Home / 3,290.79-4,533.66-2,109.81

Finding the Fourth Proportional to 3,290.79, 4,533.66 and 2,109.81

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Solution

The fourth proportional to 3,290.79, 4,533.66 and 2,109.81 is: 2,906.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.79 : 4,533.66 = 2,109.81 : x
  2. Step 2: Convert to fraction form
    3,290.79/4,533.66 = 2,109.81/x
  3. Step 3: Cross multiply
    3,290.79x = 4,533.66 × 2,109.81
  4. Step 4: Simplify right side
    3,290.79x = 9,565,161.20
  5. Step 5: Solve for x
    x = 9,565,161.20/3,290.79
  6. Step 6: Final answer
    x = 2,906.65

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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.