Home / 4,239.76-6,359.64-1,318.36

Finding the Fourth Proportional to 4,239.76, 6,359.64 and 1,318.36

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Solution

The fourth proportional to 4,239.76, 6,359.64 and 1,318.36 is: 1,977.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.76 : 6,359.64 = 1,318.36 : x
  2. Step 2: Convert to fraction form
    4,239.76/6,359.64 = 1,318.36/x
  3. Step 3: Cross multiply
    4,239.76x = 6,359.64 × 1,318.36
  4. Step 4: Simplify right side
    4,239.76x = 8,384,294.99
  5. Step 5: Solve for x
    x = 8,384,294.99/4,239.76
  6. Step 6: Final answer
    x = 1,977.54

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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.