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Finding the Fourth Proportional to 7,813.98, 10,772.08 and 5,571.97

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Solution

The fourth proportional to 7,813.98, 10,772.08 and 5,571.97 is: 7,681.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,813.98 : 10,772.08 = 5,571.97 : x
  2. Step 2: Convert to fraction form
    7,813.98/10,772.08 = 5,571.97/x
  3. Step 3: Cross multiply
    7,813.98x = 10,772.08 × 5,571.97
  4. Step 4: Simplify right side
    7,813.98x = 60,021,706.60
  5. Step 5: Solve for x
    x = 60,021,706.60/7,813.98
  6. Step 6: Final answer
    x = 7,681.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.