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Finding the Fourth Proportional to 3,018.40, 4,527.60 and 827.15

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Solution

The fourth proportional to 3,018.40, 4,527.60 and 827.15 is: 1,240.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,018.40 : 4,527.60 = 827.15 : x
  2. Step 2: Convert to fraction form
    3,018.40/4,527.60 = 827.15/x
  3. Step 3: Cross multiply
    3,018.40x = 4,527.60 × 827.15
  4. Step 4: Simplify right side
    3,018.40x = 3,745,000.23
  5. Step 5: Solve for x
    x = 3,745,000.23/3,018.40
  6. Step 6: Final answer
    x = 1,240.72

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Similar ratio
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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.