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Finding the Fourth Proportional to 6,515.79, 9,773.28 and 2,815.43

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Solution

The fourth proportional to 6,515.79, 9,773.28 and 2,815.43 is: 4,222.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.79 : 9,773.28 = 2,815.43 : x
  2. Step 2: Convert to fraction form
    6,515.79/9,773.28 = 2,815.43/x
  3. Step 3: Cross multiply
    6,515.79x = 9,773.28 × 2,815.43
  4. Step 4: Simplify right side
    6,515.79x = 27,515,936.84
  5. Step 5: Solve for x
    x = 27,515,936.84/6,515.79
  6. Step 6: Final answer
    x = 4,222.96

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1.5x scale

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.