Home / 3,243.42-4,475.79-1,917.90

Finding the Fourth Proportional to 3,243.42, 4,475.79 and 1,917.90

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Solution

The fourth proportional to 3,243.42, 4,475.79 and 1,917.90 is: 2,646.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.42 : 4,475.79 = 1,917.90 : x
  2. Step 2: Convert to fraction form
    3,243.42/4,475.79 = 1,917.90/x
  3. Step 3: Cross multiply
    3,243.42x = 4,475.79 × 1,917.90
  4. Step 4: Simplify right side
    3,243.42x = 8,584,117.64
  5. Step 5: Solve for x
    x = 8,584,117.64/3,243.42
  6. Step 6: Final answer
    x = 2,646.63

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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.