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Finding the Fourth Proportional to 8,210.54, 12,315.74 and 5,571.52

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Solution

The fourth proportional to 8,210.54, 12,315.74 and 5,571.52 is: 8,357.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.54 : 12,315.74 = 5,571.52 : x
  2. Step 2: Convert to fraction form
    8,210.54/12,315.74 = 5,571.52/x
  3. Step 3: Cross multiply
    8,210.54x = 12,315.74 × 5,571.52
  4. Step 4: Simplify right side
    8,210.54x = 68,617,391.72
  5. Step 5: Solve for x
    x = 68,617,391.72/8,210.54
  6. Step 6: Final answer
    x = 8,357.23

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