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Finding the Fourth Proportional to 1,874.21, 2,811.29 and 833.94

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Solution

The fourth proportional to 1,874.21, 2,811.29 and 833.94 is: 1,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.21 : 2,811.29 = 833.94 : x
  2. Step 2: Convert to fraction form
    1,874.21/2,811.29 = 833.94/x
  3. Step 3: Cross multiply
    1,874.21x = 2,811.29 × 833.94
  4. Step 4: Simplify right side
    1,874.21x = 2,344,443.01
  5. Step 5: Solve for x
    x = 2,344,443.01/1,874.21
  6. Step 6: Final answer
    x = 1,250.90

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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.