Home / 3,084.72-4,257.36-1,905.72

Finding the Fourth Proportional to 3,084.72, 4,257.36 and 1,905.72

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Solution

The fourth proportional to 3,084.72, 4,257.36 and 1,905.72 is: 2,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,084.72 : 4,257.36 = 1,905.72 : x
  2. Step 2: Convert to fraction form
    3,084.72/4,257.36 = 1,905.72/x
  3. Step 3: Cross multiply
    3,084.72x = 4,257.36 × 1,905.72
  4. Step 4: Simplify right side
    3,084.72x = 8,113,336.10
  5. Step 5: Solve for x
    x = 8,113,336.10/3,084.72
  6. Step 6: Final answer
    x = 2,630.17

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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.