Home / 3,836.21-5,293.76-2,157.89

Finding the Fourth Proportional to 3,836.21, 5,293.76 and 2,157.89

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Solution

The fourth proportional to 3,836.21, 5,293.76 and 2,157.89 is: 2,977.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.21 : 5,293.76 = 2,157.89 : x
  2. Step 2: Convert to fraction form
    3,836.21/5,293.76 = 2,157.89/x
  3. Step 3: Cross multiply
    3,836.21x = 5,293.76 × 2,157.89
  4. Step 4: Simplify right side
    3,836.21x = 11,423,314.51
  5. Step 5: Solve for x
    x = 11,423,314.51/3,836.21
  6. Step 6: Final answer
    x = 2,977.76

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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.