Home / 3,834.34-5,291.26-2,155.70

Finding the Fourth Proportional to 3,834.34, 5,291.26 and 2,155.70

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Solution

The fourth proportional to 3,834.34, 5,291.26 and 2,155.70 is: 2,974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.34 : 5,291.26 = 2,155.70 : x
  2. Step 2: Convert to fraction form
    3,834.34/5,291.26 = 2,155.70/x
  3. Step 3: Cross multiply
    3,834.34x = 5,291.26 × 2,155.70
  4. Step 4: Simplify right side
    3,834.34x = 11,406,369.18
  5. Step 5: Solve for x
    x = 11,406,369.18/3,834.34
  6. Step 6: Final answer
    x = 2,974.79

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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.