Home / 8,428.72-12,635.94-3,495.28

Finding the Fourth Proportional to 8,428.72, 12,635.94 and 3,495.28

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Solution

The fourth proportional to 8,428.72, 12,635.94 and 3,495.28 is: 5,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.72 : 12,635.94 = 3,495.28 : x
  2. Step 2: Convert to fraction form
    8,428.72/12,635.94 = 3,495.28/x
  3. Step 3: Cross multiply
    8,428.72x = 12,635.94 × 3,495.28
  4. Step 4: Simplify right side
    8,428.72x = 44,166,148.36
  5. Step 5: Solve for x
    x = 44,166,148.36/8,428.72
  6. Step 6: Final answer
    x = 5,239.96

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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.