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Finding the Fourth Proportional to 2,735.29, 4,102.11 and 760.45

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Solution

The fourth proportional to 2,735.29, 4,102.11 and 760.45 is: 1,140.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,735.29 : 4,102.11 = 760.45 : x
  2. Step 2: Convert to fraction form
    2,735.29/4,102.11 = 760.45/x
  3. Step 3: Cross multiply
    2,735.29x = 4,102.11 × 760.45
  4. Step 4: Simplify right side
    2,735.29x = 3,119,449.55
  5. Step 5: Solve for x
    x = 3,119,449.55/2,735.29
  6. Step 6: Final answer
    x = 1,140.45

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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.