Home / 1,724.98-2,379.79-1,127.28

Finding the Fourth Proportional to 1,724.98, 2,379.79 and 1,127.28

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Solution

The fourth proportional to 1,724.98, 2,379.79 and 1,127.28 is: 1,555.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.98 : 2,379.79 = 1,127.28 : x
  2. Step 2: Convert to fraction form
    1,724.98/2,379.79 = 1,127.28/x
  3. Step 3: Cross multiply
    1,724.98x = 2,379.79 × 1,127.28
  4. Step 4: Simplify right side
    1,724.98x = 2,682,689.67
  5. Step 5: Solve for x
    x = 2,682,689.67/1,724.98
  6. Step 6: Final answer
    x = 1,555.20

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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.