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Finding the Fourth Proportional to 3,177.99, 4,766.94 and 869.49

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Solution

The fourth proportional to 3,177.99, 4,766.94 and 869.49 is: 1,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.99 : 4,766.94 = 869.49 : x
  2. Step 2: Convert to fraction form
    3,177.99/4,766.94 = 869.49/x
  3. Step 3: Cross multiply
    3,177.99x = 4,766.94 × 869.49
  4. Step 4: Simplify right side
    3,177.99x = 4,144,806.66
  5. Step 5: Solve for x
    x = 4,144,806.66/3,177.99
  6. Step 6: Final answer
    x = 1,304.22

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1.5x scale

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.