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Finding the Fourth Proportional to 1,736.67, 2,396.41 and 990.57

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Solution

The fourth proportional to 1,736.67, 2,396.41 and 990.57 is: 1,366.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.67 : 2,396.41 = 990.57 : x
  2. Step 2: Convert to fraction form
    1,736.67/2,396.41 = 990.57/x
  3. Step 3: Cross multiply
    1,736.67x = 2,396.41 × 990.57
  4. Step 4: Simplify right side
    1,736.67x = 2,373,811.85
  5. Step 5: Solve for x
    x = 2,373,811.85/1,736.67
  6. Step 6: Final answer
    x = 1,366.88

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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.