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Finding the Fourth Proportional to 3,392.72, 5,089.13 and 1,052.70

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Solution

The fourth proportional to 3,392.72, 5,089.13 and 1,052.70 is: 1,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.72 : 5,089.13 = 1,052.70 : x
  2. Step 2: Convert to fraction form
    3,392.72/5,089.13 = 1,052.70/x
  3. Step 3: Cross multiply
    3,392.72x = 5,089.13 × 1,052.70
  4. Step 4: Simplify right side
    3,392.72x = 5,357,327.15
  5. Step 5: Solve for x
    x = 5,357,327.15/3,392.72
  6. Step 6: Final answer
    x = 1,579.07

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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.