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Finding the Fourth Proportional to 8,712.77, 12,020.00 and 5,724.68

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Solution

The fourth proportional to 8,712.77, 12,020.00 and 5,724.68 is: 7,897.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.77 : 12,020.00 = 5,724.68 : x
  2. Step 2: Convert to fraction form
    8,712.77/12,020.00 = 5,724.68/x
  3. Step 3: Cross multiply
    8,712.77x = 12,020.00 × 5,724.68
  4. Step 4: Simplify right side
    8,712.77x = 68,810,564.88
  5. Step 5: Solve for x
    x = 68,810,564.88/8,712.77
  6. Step 6: Final answer
    x = 7,897.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.