Home / 1,589.14-2,192.74-999.25

Finding the Fourth Proportional to 1,589.14, 2,192.74 and 999.25

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Solution

The fourth proportional to 1,589.14, 2,192.74 and 999.25 is: 1,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.14 : 2,192.74 = 999.25 : x
  2. Step 2: Convert to fraction form
    1,589.14/2,192.74 = 999.25/x
  3. Step 3: Cross multiply
    1,589.14x = 2,192.74 × 999.25
  4. Step 4: Simplify right side
    1,589.14x = 2,191,095.45
  5. Step 5: Solve for x
    x = 2,191,095.45/1,589.14
  6. Step 6: Final answer
    x = 1,378.79

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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.