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Finding the Fourth Proportional to 4,777, 7,166.32 and 1,489.98

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Solution

The fourth proportional to 4,777, 7,166.32 and 1,489.98 is: 2,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,777 : 7,166.32 = 1,489.98 : x
  2. Step 2: Convert to fraction form
    4,777/7,166.32 = 1,489.98/x
  3. Step 3: Cross multiply
    4,777x = 7,166.32 × 1,489.98
  4. Step 4: Simplify right side
    4,777x = 10,677,673.47
  5. Step 5: Solve for x
    x = 10,677,673.47/4,777
  6. Step 6: Final answer
    x = 2,235.23

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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.