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Finding the Fourth Proportional to 8,461.54, 12,699.60 and 4,082.68

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Solution

The fourth proportional to 8,461.54, 12,699.60 and 4,082.68 is: 6,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.54 : 12,699.60 = 4,082.68 : x
  2. Step 2: Convert to fraction form
    8,461.54/12,699.60 = 4,082.68/x
  3. Step 3: Cross multiply
    8,461.54x = 12,699.60 × 4,082.68
  4. Step 4: Simplify right side
    8,461.54x = 51,848,426.46
  5. Step 5: Solve for x
    x = 51,848,426.46/8,461.54
  6. Step 6: Final answer
    x = 6,127.54

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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.