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Finding the Fourth Proportional to 6,805.50, 9,362.43 and 6,513.90

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Solution

The fourth proportional to 6,805.50, 9,362.43 and 6,513.90 is: 8,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,805.50 : 9,362.43 = 6,513.90 : x
  2. Step 2: Convert to fraction form
    6,805.50/9,362.43 = 6,513.90/x
  3. Step 3: Cross multiply
    6,805.50x = 9,362.43 × 6,513.90
  4. Step 4: Simplify right side
    6,805.50x = 60,985,932.78
  5. Step 5: Solve for x
    x = 60,985,932.78/6,805.50
  6. Step 6: Final answer
    x = 8,961.27

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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.