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Finding the Fourth Proportional to 3,695.81, 5,091.29 and 3,162.99

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Solution

The fourth proportional to 3,695.81, 5,091.29 and 3,162.99 is: 4,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,695.81 : 5,091.29 = 3,162.99 : x
  2. Step 2: Convert to fraction form
    3,695.81/5,091.29 = 3,162.99/x
  3. Step 3: Cross multiply
    3,695.81x = 5,091.29 × 3,162.99
  4. Step 4: Simplify right side
    3,695.81x = 16,103,672.03
  5. Step 5: Solve for x
    x = 16,103,672.03/3,695.81
  6. Step 6: Final answer
    x = 4,357.28

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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.