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Finding the Fourth Proportional to 2,751.91, 4,127.90 and 804.15

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Solution

The fourth proportional to 2,751.91, 4,127.90 and 804.15 is: 1,206.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.91 : 4,127.90 = 804.15 : x
  2. Step 2: Convert to fraction form
    2,751.91/4,127.90 = 804.15/x
  3. Step 3: Cross multiply
    2,751.91x = 4,127.90 × 804.15
  4. Step 4: Simplify right side
    2,751.91x = 3,319,446.76
  5. Step 5: Solve for x
    x = 3,319,446.76/2,751.91
  6. Step 6: Final answer
    x = 1,206.23

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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.