Home / 3,813.70-5,262.87-2,135.12

Finding the Fourth Proportional to 3,813.70, 5,262.87 and 2,135.12

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Solution

The fourth proportional to 3,813.70, 5,262.87 and 2,135.12 is: 2,946.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.70 : 5,262.87 = 2,135.12 : x
  2. Step 2: Convert to fraction form
    3,813.70/5,262.87 = 2,135.12/x
  3. Step 3: Cross multiply
    3,813.70x = 5,262.87 × 2,135.12
  4. Step 4: Simplify right side
    3,813.70x = 11,236,830.88
  5. Step 5: Solve for x
    x = 11,236,830.88/3,813.70
  6. Step 6: Final answer
    x = 2,946.44

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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.