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Finding the Fourth Proportional to 4,729.24, 7,089 and 1,806.76

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Solution

The fourth proportional to 4,729.24, 7,089 and 1,806.76 is: 2,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,729.24 : 7,089 = 1,806.76 : x
  2. Step 2: Convert to fraction form
    4,729.24/7,089 = 1,806.76/x
  3. Step 3: Cross multiply
    4,729.24x = 7,089 × 1,806.76
  4. Step 4: Simplify right side
    4,729.24x = 12,808,121.64
  5. Step 5: Solve for x
    x = 12,808,121.64/4,729.24
  6. Step 6: Final answer
    x = 2,708.28

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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.