Home / 7,215.87-10,823.09-3,520.65

Finding the Fourth Proportional to 7,215.87, 10,823.09 and 3,520.65

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Solution

The fourth proportional to 7,215.87, 10,823.09 and 3,520.65 is: 5,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.87 : 10,823.09 = 3,520.65 : x
  2. Step 2: Convert to fraction form
    7,215.87/10,823.09 = 3,520.65/x
  3. Step 3: Cross multiply
    7,215.87x = 10,823.09 × 3,520.65
  4. Step 4: Simplify right side
    7,215.87x = 38,104,240.09
  5. Step 5: Solve for x
    x = 38,104,240.09/7,215.87
  6. Step 6: Final answer
    x = 5,280.62

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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.