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Finding the Fourth Proportional to 3,862.81, 5,765.94 and 3,318.49

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Solution

The fourth proportional to 3,862.81, 5,765.94 and 3,318.49 is: 4,953.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,862.81 : 5,765.94 = 3,318.49 : x
  2. Step 2: Convert to fraction form
    3,862.81/5,765.94 = 3,318.49/x
  3. Step 3: Cross multiply
    3,862.81x = 5,765.94 × 3,318.49
  4. Step 4: Simplify right side
    3,862.81x = 19,134,214.23
  5. Step 5: Solve for x
    x = 19,134,214.23/3,862.81
  6. Step 6: Final answer
    x = 4,953.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.