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Finding the Fourth Proportional to 7,451.61, 10,280.28 and 4,800.55

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Solution

The fourth proportional to 7,451.61, 10,280.28 and 4,800.55 is: 6,622.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.61 : 10,280.28 = 4,800.55 : x
  2. Step 2: Convert to fraction form
    7,451.61/10,280.28 = 4,800.55/x
  3. Step 3: Cross multiply
    7,451.61x = 10,280.28 × 4,800.55
  4. Step 4: Simplify right side
    7,451.61x = 49,350,998.15
  5. Step 5: Solve for x
    x = 49,350,998.15/7,451.61
  6. Step 6: Final answer
    x = 6,622.86

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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.