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Finding the Fourth Proportional to 1,294.40, 1,785.84 and 796.76

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Solution

The fourth proportional to 1,294.40, 1,785.84 and 796.76 is: 1,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.40 : 1,785.84 = 796.76 : x
  2. Step 2: Convert to fraction form
    1,294.40/1,785.84 = 796.76/x
  3. Step 3: Cross multiply
    1,294.40x = 1,785.84 × 796.76
  4. Step 4: Simplify right side
    1,294.40x = 1,422,885.88
  5. Step 5: Solve for x
    x = 1,422,885.88/1,294.40
  6. Step 6: Final answer
    x = 1,099.26

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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.