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Finding the Fourth Proportional to 3,057.42, 4,585.32 and 866.28

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Solution

The fourth proportional to 3,057.42, 4,585.32 and 866.28 is: 1,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.42 : 4,585.32 = 866.28 : x
  2. Step 2: Convert to fraction form
    3,057.42/4,585.32 = 866.28/x
  3. Step 3: Cross multiply
    3,057.42x = 4,585.32 × 866.28
  4. Step 4: Simplify right side
    3,057.42x = 3,972,171.01
  5. Step 5: Solve for x
    x = 3,972,171.01/3,057.42
  6. Step 6: Final answer
    x = 1,299.19

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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.