Home / 1,960.08-2,938.86-864.96

Finding the Fourth Proportional to 1,960.08, 2,938.86 and 864.96

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Solution

The fourth proportional to 1,960.08, 2,938.86 and 864.96 is: 1,296.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,960.08 : 2,938.86 = 864.96 : x
  2. Step 2: Convert to fraction form
    1,960.08/2,938.86 = 864.96/x
  3. Step 3: Cross multiply
    1,960.08x = 2,938.86 × 864.96
  4. Step 4: Simplify right side
    1,960.08x = 2,541,996.35
  5. Step 5: Solve for x
    x = 2,541,996.35/1,960.08
  6. Step 6: Final answer
    x = 1,296.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.