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Finding the Fourth Proportional to 8,700.56, 13,050.82 and 4,321.09

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Solution

The fourth proportional to 8,700.56, 13,050.82 and 4,321.09 is: 6,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.56 : 13,050.82 = 4,321.09 : x
  2. Step 2: Convert to fraction form
    8,700.56/13,050.82 = 4,321.09/x
  3. Step 3: Cross multiply
    8,700.56x = 13,050.82 × 4,321.09
  4. Step 4: Simplify right side
    8,700.56x = 56,393,767.79
  5. Step 5: Solve for x
    x = 56,393,767.79/8,700.56
  6. Step 6: Final answer
    x = 6,481.63

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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.