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Finding the Fourth Proportional to 6,655.86, 9,976.57 and 3,280.99

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Solution

The fourth proportional to 6,655.86, 9,976.57 and 3,280.99 is: 4,917.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,655.86 : 9,976.57 = 3,280.99 : x
  2. Step 2: Convert to fraction form
    6,655.86/9,976.57 = 3,280.99/x
  3. Step 3: Cross multiply
    6,655.86x = 9,976.57 × 3,280.99
  4. Step 4: Simplify right side
    6,655.86x = 32,733,074.82
  5. Step 5: Solve for x
    x = 32,733,074.82/6,655.86
  6. Step 6: Final answer
    x = 4,917.93

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Why These Related Problems?

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