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Finding the Fourth Proportional to 2,759.40, 3,809.22 and 1,766.01

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Solution

The fourth proportional to 2,759.40, 3,809.22 and 1,766.01 is: 2,437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.40 : 3,809.22 = 1,766.01 : x
  2. Step 2: Convert to fraction form
    2,759.40/3,809.22 = 1,766.01/x
  3. Step 3: Cross multiply
    2,759.40x = 3,809.22 × 1,766.01
  4. Step 4: Simplify right side
    2,759.40x = 6,727,120.61
  5. Step 5: Solve for x
    x = 6,727,120.61/2,759.40
  6. Step 6: Final answer
    x = 2,437.89

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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.