Home / 3,780.06-5,216.19-2,101.43

Finding the Fourth Proportional to 3,780.06, 5,216.19 and 2,101.43

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Solution

The fourth proportional to 3,780.06, 5,216.19 and 2,101.43 is: 2,899.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.06 : 5,216.19 = 2,101.43 : x
  2. Step 2: Convert to fraction form
    3,780.06/5,216.19 = 2,101.43/x
  3. Step 3: Cross multiply
    3,780.06x = 5,216.19 × 2,101.43
  4. Step 4: Simplify right side
    3,780.06x = 10,961,432.07
  5. Step 5: Solve for x
    x = 10,961,432.07/3,780.06
  6. Step 6: Final answer
    x = 2,899.80

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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.