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Finding the Fourth Proportional to 8,628.79, 12,944.04 and 3,082.63

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Solution

The fourth proportional to 8,628.79, 12,944.04 and 3,082.63 is: 4,624.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.79 : 12,944.04 = 3,082.63 : x
  2. Step 2: Convert to fraction form
    8,628.79/12,944.04 = 3,082.63/x
  3. Step 3: Cross multiply
    8,628.79x = 12,944.04 × 3,082.63
  4. Step 4: Simplify right side
    8,628.79x = 39,901,686.03
  5. Step 5: Solve for x
    x = 39,901,686.03/8,628.79
  6. Step 6: Final answer
    x = 4,624.25

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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.