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Finding the Fourth Proportional to 7,897.93, 10,910.36 and 6,315.09

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Solution

The fourth proportional to 7,897.93, 10,910.36 and 6,315.09 is: 8,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.93 : 10,910.36 = 6,315.09 : x
  2. Step 2: Convert to fraction form
    7,897.93/10,910.36 = 6,315.09/x
  3. Step 3: Cross multiply
    7,897.93x = 10,910.36 × 6,315.09
  4. Step 4: Simplify right side
    7,897.93x = 68,899,905.33
  5. Step 5: Solve for x
    x = 68,899,905.33/7,897.93
  6. Step 6: Final answer
    x = 8,723.79

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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.