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Finding the Fourth Proportional to 8,394.72, 12,591.86 and 3,460.70

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Solution

The fourth proportional to 8,394.72, 12,591.86 and 3,460.70 is: 5,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.72 : 12,591.86 = 3,460.70 : x
  2. Step 2: Convert to fraction form
    8,394.72/12,591.86 = 3,460.70/x
  3. Step 3: Cross multiply
    8,394.72x = 12,591.86 × 3,460.70
  4. Step 4: Simplify right side
    8,394.72x = 43,576,569.64
  5. Step 5: Solve for x
    x = 43,576,569.64/8,394.72
  6. Step 6: Final answer
    x = 5,190.95

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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.