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Finding the Fourth Proportional to 3,730.78, 5,591.20 and 1,975.42

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Solution

The fourth proportional to 3,730.78, 5,591.20 and 1,975.42 is: 2,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,730.78 : 5,591.20 = 1,975.42 : x
  2. Step 2: Convert to fraction form
    3,730.78/5,591.20 = 1,975.42/x
  3. Step 3: Cross multiply
    3,730.78x = 5,591.20 × 1,975.42
  4. Step 4: Simplify right side
    3,730.78x = 11,044,968.30
  5. Step 5: Solve for x
    x = 11,044,968.30/3,730.78
  6. Step 6: Final answer
    x = 2,960.50

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1.5x scale

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.