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Finding the Fourth Proportional to 8,828.42, 12,188.94 and 5,474.80

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Solution

The fourth proportional to 8,828.42, 12,188.94 and 5,474.80 is: 7,558.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,828.42 : 12,188.94 = 5,474.80 : x
  2. Step 2: Convert to fraction form
    8,828.42/12,188.94 = 5,474.80/x
  3. Step 3: Cross multiply
    8,828.42x = 12,188.94 × 5,474.80
  4. Step 4: Simplify right side
    8,828.42x = 66,732,008.71
  5. Step 5: Solve for x
    x = 66,732,008.71/8,828.42
  6. Step 6: Final answer
    x = 7,558.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.