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Finding the Fourth Proportional to 7,893.98, 10,897.63 and 4,910.78

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Solution

The fourth proportional to 7,893.98, 10,897.63 and 4,910.78 is: 6,779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,893.98 : 10,897.63 = 4,910.78 : x
  2. Step 2: Convert to fraction form
    7,893.98/10,897.63 = 4,910.78/x
  3. Step 3: Cross multiply
    7,893.98x = 10,897.63 × 4,910.78
  4. Step 4: Simplify right side
    7,893.98x = 53,515,878.42
  5. Step 5: Solve for x
    x = 53,515,878.42/7,893.98
  6. Step 6: Final answer
    x = 6,779.33

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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.