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Finding the Fourth Proportional to 3,396.99, 5,095.44 and 931.81

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Solution

The fourth proportional to 3,396.99, 5,095.44 and 931.81 is: 1,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,396.99 : 5,095.44 = 931.81 : x
  2. Step 2: Convert to fraction form
    3,396.99/5,095.44 = 931.81/x
  3. Step 3: Cross multiply
    3,396.99x = 5,095.44 × 931.81
  4. Step 4: Simplify right side
    3,396.99x = 4,747,969.21
  5. Step 5: Solve for x
    x = 4,747,969.21/3,396.99
  6. Step 6: Final answer
    x = 1,397.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.