Home / 3,780.24-5,216.76-2,101.68

Finding the Fourth Proportional to 3,780.24, 5,216.76 and 2,101.68

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Solution

The fourth proportional to 3,780.24, 5,216.76 and 2,101.68 is: 2,900.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.24 : 5,216.76 = 2,101.68 : x
  2. Step 2: Convert to fraction form
    3,780.24/5,216.76 = 2,101.68/x
  3. Step 3: Cross multiply
    3,780.24x = 5,216.76 × 2,101.68
  4. Step 4: Simplify right side
    3,780.24x = 10,963,960.16
  5. Step 5: Solve for x
    x = 10,963,960.16/3,780.24
  6. Step 6: Final answer
    x = 2,900.33

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Half scale
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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.