Home / 1,446.80-1,996.32-1,225.28

Finding the Fourth Proportional to 1,446.80, 1,996.32 and 1,225.28

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Solution

The fourth proportional to 1,446.80, 1,996.32 and 1,225.28 is: 1,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,446.80 : 1,996.32 = 1,225.28 : x
  2. Step 2: Convert to fraction form
    1,446.80/1,996.32 = 1,225.28/x
  3. Step 3: Cross multiply
    1,446.80x = 1,996.32 × 1,225.28
  4. Step 4: Simplify right side
    1,446.80x = 2,446,050.97
  5. Step 5: Solve for x
    x = 2,446,050.97/1,446.80
  6. Step 6: Final answer
    x = 1,690.66

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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.