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Finding the Fourth Proportional to 6,688.68, 10,032.48 and 2,990.76

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Solution

The fourth proportional to 6,688.68, 10,032.48 and 2,990.76 is: 4,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.68 : 10,032.48 = 2,990.76 : x
  2. Step 2: Convert to fraction form
    6,688.68/10,032.48 = 2,990.76/x
  3. Step 3: Cross multiply
    6,688.68x = 10,032.48 × 2,990.76
  4. Step 4: Simplify right side
    6,688.68x = 30,004,739.88
  5. Step 5: Solve for x
    x = 30,004,739.88/6,688.68
  6. Step 6: Final answer
    x = 4,485.90

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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.