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Finding the Fourth Proportional to 7,188.98, 10,718.96 and 7,057.76

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Solution

The fourth proportional to 7,188.98, 10,718.96 and 7,057.76 is: 10,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.98 : 10,718.96 = 7,057.76 : x
  2. Step 2: Convert to fraction form
    7,188.98/10,718.96 = 7,057.76/x
  3. Step 3: Cross multiply
    7,188.98x = 10,718.96 × 7,057.76
  4. Step 4: Simplify right side
    7,188.98x = 75,651,847.13
  5. Step 5: Solve for x
    x = 75,651,847.13/7,188.98
  6. Step 6: Final answer
    x = 10,523.31

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.