Home / 1,299.18-1,939.26-1,127.04

Finding the Fourth Proportional to 1,299.18, 1,939.26 and 1,127.04

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Solution

The fourth proportional to 1,299.18, 1,939.26 and 1,127.04 is: 1,682.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.18 : 1,939.26 = 1,127.04 : x
  2. Step 2: Convert to fraction form
    1,299.18/1,939.26 = 1,127.04/x
  3. Step 3: Cross multiply
    1,299.18x = 1,939.26 × 1,127.04
  4. Step 4: Simplify right side
    1,299.18x = 2,185,623.59
  5. Step 5: Solve for x
    x = 2,185,623.59/1,299.18
  6. Step 6: Final answer
    x = 1,682.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.