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Finding the Fourth Proportional to 3,392, 5,089.52 and 1,543.60

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Solution

The fourth proportional to 3,392, 5,089.52 and 1,543.60 is: 2,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392 : 5,089.52 = 1,543.60 : x
  2. Step 2: Convert to fraction form
    3,392/5,089.52 = 1,543.60/x
  3. Step 3: Cross multiply
    3,392x = 5,089.52 × 1,543.60
  4. Step 4: Simplify right side
    3,392x = 7,856,183.07
  5. Step 5: Solve for x
    x = 7,856,183.07/3,392
  6. Step 6: Final answer
    x = 2,316.09

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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.