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Finding the Fourth Proportional to 2,052.56, 3,079.08 and 665.84

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Solution

The fourth proportional to 2,052.56, 3,079.08 and 665.84 is: 998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.56 : 3,079.08 = 665.84 : x
  2. Step 2: Convert to fraction form
    2,052.56/3,079.08 = 665.84/x
  3. Step 3: Cross multiply
    2,052.56x = 3,079.08 × 665.84
  4. Step 4: Simplify right side
    2,052.56x = 2,050,182.32
  5. Step 5: Solve for x
    x = 2,050,182.32/2,052.56
  6. Step 6: Final answer
    x = 998.84

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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.