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Finding the Fourth Proportional to 8,471.84, 12,708.96 and 2,628.96

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Solution

The fourth proportional to 8,471.84, 12,708.96 and 2,628.96 is: 3,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.84 : 12,708.96 = 2,628.96 : x
  2. Step 2: Convert to fraction form
    8,471.84/12,708.96 = 2,628.96/x
  3. Step 3: Cross multiply
    8,471.84x = 12,708.96 × 2,628.96
  4. Step 4: Simplify right side
    8,471.84x = 33,411,347.48
  5. Step 5: Solve for x
    x = 33,411,347.48/8,471.84
  6. Step 6: Final answer
    x = 3,943.81

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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.