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Finding the Fourth Proportional to 8,047.12, 12,064.32 and 5,230

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Solution

The fourth proportional to 8,047.12, 12,064.32 and 5,230 is: 7,840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,047.12 : 12,064.32 = 5,230 : x
  2. Step 2: Convert to fraction form
    8,047.12/12,064.32 = 5,230/x
  3. Step 3: Cross multiply
    8,047.12x = 12,064.32 × 5,230
  4. Step 4: Simplify right side
    8,047.12x = 63,096,393.60
  5. Step 5: Solve for x
    x = 63,096,393.60/8,047.12
  6. Step 6: Final answer
    x = 7,840.87

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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.