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Finding the Fourth Proportional to 8,758.74, 13,124.61 and 4,311.30

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Solution

The fourth proportional to 8,758.74, 13,124.61 and 4,311.30 is: 6,460.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,758.74 : 13,124.61 = 4,311.30 : x
  2. Step 2: Convert to fraction form
    8,758.74/13,124.61 = 4,311.30/x
  3. Step 3: Cross multiply
    8,758.74x = 13,124.61 × 4,311.30
  4. Step 4: Simplify right side
    8,758.74x = 56,584,131.09
  5. Step 5: Solve for x
    x = 56,584,131.09/8,758.74
  6. Step 6: Final answer
    x = 6,460.30

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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.