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Finding the Fourth Proportional to 3,318.62, 4,978.53 and 1,010.06

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Solution

The fourth proportional to 3,318.62, 4,978.53 and 1,010.06 is: 1,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.62 : 4,978.53 = 1,010.06 : x
  2. Step 2: Convert to fraction form
    3,318.62/4,978.53 = 1,010.06/x
  3. Step 3: Cross multiply
    3,318.62x = 4,978.53 × 1,010.06
  4. Step 4: Simplify right side
    3,318.62x = 5,028,614.01
  5. Step 5: Solve for x
    x = 5,028,614.01/3,318.62
  6. Step 6: Final answer
    x = 1,515.27

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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.