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Finding the Fourth Proportional to 2,806.88, 4,210.32 and 754.88

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Solution

The fourth proportional to 2,806.88, 4,210.32 and 754.88 is: 1,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.88 : 4,210.32 = 754.88 : x
  2. Step 2: Convert to fraction form
    2,806.88/4,210.32 = 754.88/x
  3. Step 3: Cross multiply
    2,806.88x = 4,210.32 × 754.88
  4. Step 4: Simplify right side
    2,806.88x = 3,178,286.36
  5. Step 5: Solve for x
    x = 3,178,286.36/2,806.88
  6. Step 6: Final answer
    x = 1,132.32

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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.