Home / 6,487.28-9,729.94-1,806.80

Finding the Fourth Proportional to 6,487.28, 9,729.94 and 1,806.80

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Solution

The fourth proportional to 6,487.28, 9,729.94 and 1,806.80 is: 2,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,487.28 : 9,729.94 = 1,806.80 : x
  2. Step 2: Convert to fraction form
    6,487.28/9,729.94 = 1,806.80/x
  3. Step 3: Cross multiply
    6,487.28x = 9,729.94 × 1,806.80
  4. Step 4: Simplify right side
    6,487.28x = 17,580,055.59
  5. Step 5: Solve for x
    x = 17,580,055.59/6,487.28
  6. Step 6: Final answer
    x = 2,709.93

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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.