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Finding the Fourth Proportional to 4,687.67, 7,031.50 and 2,738.81

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Solution

The fourth proportional to 4,687.67, 7,031.50 and 2,738.81 is: 4,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.67 : 7,031.50 = 2,738.81 : x
  2. Step 2: Convert to fraction form
    4,687.67/7,031.50 = 2,738.81/x
  3. Step 3: Cross multiply
    4,687.67x = 7,031.50 × 2,738.81
  4. Step 4: Simplify right side
    4,687.67x = 19,257,900.51
  5. Step 5: Solve for x
    x = 19,257,900.51/4,687.67
  6. Step 6: Final answer
    x = 4,108.21

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