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Finding the Fourth Proportional to 2,605.29, 3,909.46 and 962.99

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Solution

The fourth proportional to 2,605.29, 3,909.46 and 962.99 is: 1,445.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.29 : 3,909.46 = 962.99 : x
  2. Step 2: Convert to fraction form
    2,605.29/3,909.46 = 962.99/x
  3. Step 3: Cross multiply
    2,605.29x = 3,909.46 × 962.99
  4. Step 4: Simplify right side
    2,605.29x = 3,764,751.34
  5. Step 5: Solve for x
    x = 3,764,751.34/2,605.29
  6. Step 6: Final answer
    x = 1,445.04

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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.