Home / 1,905.88-2,630.10-1,120.38

Finding the Fourth Proportional to 1,905.88, 2,630.10 and 1,120.38

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Solution

The fourth proportional to 1,905.88, 2,630.10 and 1,120.38 is: 1,546.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.88 : 2,630.10 = 1,120.38 : x
  2. Step 2: Convert to fraction form
    1,905.88/2,630.10 = 1,120.38/x
  3. Step 3: Cross multiply
    1,905.88x = 2,630.10 × 1,120.38
  4. Step 4: Simplify right side
    1,905.88x = 2,946,711.44
  5. Step 5: Solve for x
    x = 2,946,711.44/1,905.88
  6. Step 6: Final answer
    x = 1,546.12

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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.