Home / 1,662.12-2,292.66-999.18

Finding the Fourth Proportional to 1,662.12, 2,292.66 and 999.18

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Solution

The fourth proportional to 1,662.12, 2,292.66 and 999.18 is: 1,378.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.12 : 2,292.66 = 999.18 : x
  2. Step 2: Convert to fraction form
    1,662.12/2,292.66 = 999.18/x
  3. Step 3: Cross multiply
    1,662.12x = 2,292.66 × 999.18
  4. Step 4: Simplify right side
    1,662.12x = 2,290,780.02
  5. Step 5: Solve for x
    x = 2,290,780.02/1,662.12
  6. Step 6: Final answer
    x = 1,378.23

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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.