Home / 3,921-5,411.46-2,265

Finding the Fourth Proportional to 3,921, 5,411.46 and 2,265

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Solution

The fourth proportional to 3,921, 5,411.46 and 2,265 is: 3,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921 : 5,411.46 = 2,265 : x
  2. Step 2: Convert to fraction form
    3,921/5,411.46 = 2,265/x
  3. Step 3: Cross multiply
    3,921x = 5,411.46 × 2,265
  4. Step 4: Simplify right side
    3,921x = 12,256,956.90
  5. Step 5: Solve for x
    x = 12,256,956.90/3,921
  6. Step 6: Final answer
    x = 3,125.98

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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.