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Finding the Fourth Proportional to 7,644.80, 10,676.80 and 7,644.80

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Solution

The fourth proportional to 7,644.80, 10,676.80 and 7,644.80 is: 10,676.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,644.80 : 10,676.80 = 7,644.80 : x
  2. Step 2: Convert to fraction form
    7,644.80/10,676.80 = 7,644.80/x
  3. Step 3: Cross multiply
    7,644.80x = 10,676.80 × 7,644.80
  4. Step 4: Simplify right side
    7,644.80x = 81,622,000.64
  5. Step 5: Solve for x
    x = 81,622,000.64/7,644.80
  6. Step 6: Final answer
    x = 10,676.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.