Home / 4,243.78-6,368.64-1,778.68

Finding the Fourth Proportional to 4,243.78, 6,368.64 and 1,778.68

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Solution

The fourth proportional to 4,243.78, 6,368.64 and 1,778.68 is: 2,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.78 : 6,368.64 = 1,778.68 : x
  2. Step 2: Convert to fraction form
    4,243.78/6,368.64 = 1,778.68/x
  3. Step 3: Cross multiply
    4,243.78x = 6,368.64 × 1,778.68
  4. Step 4: Simplify right side
    4,243.78x = 11,327,772.60
  5. Step 5: Solve for x
    x = 11,327,772.60/4,243.78
  6. Step 6: Final answer
    x = 2,669.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.