Home / 7,215.49-10,813.67-3,705.36

Finding the Fourth Proportional to 7,215.49, 10,813.67 and 3,705.36

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Solution

The fourth proportional to 7,215.49, 10,813.67 and 3,705.36 is: 5,553.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.49 : 10,813.67 = 3,705.36 : x
  2. Step 2: Convert to fraction form
    7,215.49/10,813.67 = 3,705.36/x
  3. Step 3: Cross multiply
    7,215.49x = 10,813.67 × 3,705.36
  4. Step 4: Simplify right side
    7,215.49x = 40,068,495.09
  5. Step 5: Solve for x
    x = 40,068,495.09/7,215.49
  6. Step 6: Final answer
    x = 5,553.12

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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.