Home / 3,813.72-5,262.78-2,135.10

Finding the Fourth Proportional to 3,813.72, 5,262.78 and 2,135.10

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Solution

The fourth proportional to 3,813.72, 5,262.78 and 2,135.10 is: 2,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.72 : 5,262.78 = 2,135.10 : x
  2. Step 2: Convert to fraction form
    3,813.72/5,262.78 = 2,135.10/x
  3. Step 3: Cross multiply
    3,813.72x = 5,262.78 × 2,135.10
  4. Step 4: Simplify right side
    3,813.72x = 11,236,561.58
  5. Step 5: Solve for x
    x = 11,236,561.58/3,813.72
  6. Step 6: Final answer
    x = 2,946.35

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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.