Home / 1,120.92-1,546.96-623.72

Finding the Fourth Proportional to 1,120.92, 1,546.96 and 623.72

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Solution

The fourth proportional to 1,120.92, 1,546.96 and 623.72 is: 860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.92 : 1,546.96 = 623.72 : x
  2. Step 2: Convert to fraction form
    1,120.92/1,546.96 = 623.72/x
  3. Step 3: Cross multiply
    1,120.92x = 1,546.96 × 623.72
  4. Step 4: Simplify right side
    1,120.92x = 964,869.89
  5. Step 5: Solve for x
    x = 964,869.89/1,120.92
  6. Step 6: Final answer
    x = 860.78

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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.