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Finding the Fourth Proportional to 2,056.53, 3,084.43 and 669.66

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Solution

The fourth proportional to 2,056.53, 3,084.43 and 669.66 is: 1,004.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,056.53 : 3,084.43 = 669.66 : x
  2. Step 2: Convert to fraction form
    2,056.53/3,084.43 = 669.66/x
  3. Step 3: Cross multiply
    2,056.53x = 3,084.43 × 669.66
  4. Step 4: Simplify right side
    2,056.53x = 2,065,519.39
  5. Step 5: Solve for x
    x = 2,065,519.39/2,056.53
  6. Step 6: Final answer
    x = 1,004.37

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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.