Home / 3,834.72-5,291.76-2,156.16

Finding the Fourth Proportional to 3,834.72, 5,291.76 and 2,156.16

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Solution

The fourth proportional to 3,834.72, 5,291.76 and 2,156.16 is: 2,975.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.72 : 5,291.76 = 2,156.16 : x
  2. Step 2: Convert to fraction form
    3,834.72/5,291.76 = 2,156.16/x
  3. Step 3: Cross multiply
    3,834.72x = 5,291.76 × 2,156.16
  4. Step 4: Simplify right side
    3,834.72x = 11,409,881.24
  5. Step 5: Solve for x
    x = 11,409,881.24/3,834.72
  6. Step 6: Final answer
    x = 2,975.41

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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.