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Finding the Fourth Proportional to 3,527.28, 5,291.28 and 3,512.88

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Solution

The fourth proportional to 3,527.28, 5,291.28 and 3,512.88 is: 5,269.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,527.28 : 5,291.28 = 3,512.88 : x
  2. Step 2: Convert to fraction form
    3,527.28/5,291.28 = 3,512.88/x
  3. Step 3: Cross multiply
    3,527.28x = 5,291.28 × 3,512.88
  4. Step 4: Simplify right side
    3,527.28x = 18,587,631.69
  5. Step 5: Solve for x
    x = 18,587,631.69/3,527.28
  6. Step 6: Final answer
    x = 5,269.68

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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.