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Finding the Fourth Proportional to 2,052.88, 3,078.93 and 666.22

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Solution

The fourth proportional to 2,052.88, 3,078.93 and 666.22 is: 999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.88 : 3,078.93 = 666.22 : x
  2. Step 2: Convert to fraction form
    2,052.88/3,078.93 = 666.22/x
  3. Step 3: Cross multiply
    2,052.88x = 3,078.93 × 666.22
  4. Step 4: Simplify right side
    2,052.88x = 2,051,254.37
  5. Step 5: Solve for x
    x = 2,051,254.37/2,052.88
  6. Step 6: Final answer
    x = 999.21

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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.