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Finding the Fourth Proportional to 8,484.70, 12,720.44 and 4,040.07

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Solution

The fourth proportional to 8,484.70, 12,720.44 and 4,040.07 is: 6,056.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.70 : 12,720.44 = 4,040.07 : x
  2. Step 2: Convert to fraction form
    8,484.70/12,720.44 = 4,040.07/x
  3. Step 3: Cross multiply
    8,484.70x = 12,720.44 × 4,040.07
  4. Step 4: Simplify right side
    8,484.70x = 51,391,447.83
  5. Step 5: Solve for x
    x = 51,391,447.83/8,484.70
  6. Step 6: Final answer
    x = 6,056.96

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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.