Home / 3,834.19-5,291.13-2,155.88

Finding the Fourth Proportional to 3,834.19, 5,291.13 and 2,155.88

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Solution

The fourth proportional to 3,834.19, 5,291.13 and 2,155.88 is: 2,975.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.19 : 5,291.13 = 2,155.88 : x
  2. Step 2: Convert to fraction form
    3,834.19/5,291.13 = 2,155.88/x
  3. Step 3: Cross multiply
    3,834.19x = 5,291.13 × 2,155.88
  4. Step 4: Simplify right side
    3,834.19x = 11,407,041.34
  5. Step 5: Solve for x
    x = 11,407,041.34/3,834.19
  6. Step 6: Final answer
    x = 2,975.09

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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.