Home / 1,376.57-1,896.54-1,127.90

Finding the Fourth Proportional to 1,376.57, 1,896.54 and 1,127.90

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Solution

The fourth proportional to 1,376.57, 1,896.54 and 1,127.90 is: 1,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.57 : 1,896.54 = 1,127.90 : x
  2. Step 2: Convert to fraction form
    1,376.57/1,896.54 = 1,127.90/x
  3. Step 3: Cross multiply
    1,376.57x = 1,896.54 × 1,127.90
  4. Step 4: Simplify right side
    1,376.57x = 2,139,107.47
  5. Step 5: Solve for x
    x = 2,139,107.47/1,376.57
  6. Step 6: Final answer
    x = 1,553.94

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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.