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Finding the Fourth Proportional to 5,605.67, 7,736.37 and 4,186.90

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Solution

The fourth proportional to 5,605.67, 7,736.37 and 4,186.90 is: 5,778.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,605.67 : 7,736.37 = 4,186.90 : x
  2. Step 2: Convert to fraction form
    5,605.67/7,736.37 = 4,186.90/x
  3. Step 3: Cross multiply
    5,605.67x = 7,736.37 × 4,186.90
  4. Step 4: Simplify right side
    5,605.67x = 32,391,381.56
  5. Step 5: Solve for x
    x = 32,391,381.56/5,605.67
  6. Step 6: Final answer
    x = 5,778.32

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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.