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Finding the Fourth Proportional to 3,739.52, 5,609.08 and 1,142.24

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Solution

The fourth proportional to 3,739.52, 5,609.08 and 1,142.24 is: 1,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,739.52 : 5,609.08 = 1,142.24 : x
  2. Step 2: Convert to fraction form
    3,739.52/5,609.08 = 1,142.24/x
  3. Step 3: Cross multiply
    3,739.52x = 5,609.08 × 1,142.24
  4. Step 4: Simplify right side
    3,739.52x = 6,406,915.54
  5. Step 5: Solve for x
    x = 6,406,915.54/3,739.52
  6. Step 6: Final answer
    x = 1,713.30

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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.