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Finding the Fourth Proportional to 7,406.91, 10,221.80 and 4,891.23

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Solution

The fourth proportional to 7,406.91, 10,221.80 and 4,891.23 is: 6,750.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,406.91 : 10,221.80 = 4,891.23 : x
  2. Step 2: Convert to fraction form
    7,406.91/10,221.80 = 4,891.23/x
  3. Step 3: Cross multiply
    7,406.91x = 10,221.80 × 4,891.23
  4. Step 4: Simplify right side
    7,406.91x = 49,997,150.36
  5. Step 5: Solve for x
    x = 49,997,150.36/7,406.91
  6. Step 6: Final answer
    x = 6,750.07

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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.