Home / 3,780.81-5,216.22-2,187.03

Finding the Fourth Proportional to 3,780.81, 5,216.22 and 2,187.03

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Solution

The fourth proportional to 3,780.81, 5,216.22 and 2,187.03 is: 3,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.81 : 5,216.22 = 2,187.03 : x
  2. Step 2: Convert to fraction form
    3,780.81/5,216.22 = 2,187.03/x
  3. Step 3: Cross multiply
    3,780.81x = 5,216.22 × 2,187.03
  4. Step 4: Simplify right side
    3,780.81x = 11,408,029.63
  5. Step 5: Solve for x
    x = 11,408,029.63/3,780.81
  6. Step 6: Final answer
    x = 3,017.35

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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.