Home / 3,813.89-5,262.57-2,135.36

Finding the Fourth Proportional to 3,813.89, 5,262.57 and 2,135.36

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Solution

The fourth proportional to 3,813.89, 5,262.57 and 2,135.36 is: 2,946.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.89 : 5,262.57 = 2,135.36 : x
  2. Step 2: Convert to fraction form
    3,813.89/5,262.57 = 2,135.36/x
  3. Step 3: Cross multiply
    3,813.89x = 5,262.57 × 2,135.36
  4. Step 4: Simplify right side
    3,813.89x = 11,237,494.63
  5. Step 5: Solve for x
    x = 11,237,494.63/3,813.89
  6. Step 6: Final answer
    x = 2,946.47

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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.