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Finding the Fourth Proportional to 8,558.50, 11,810.70 and 5,021.68

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Solution

The fourth proportional to 8,558.50, 11,810.70 and 5,021.68 is: 6,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,558.50 : 11,810.70 = 5,021.68 : x
  2. Step 2: Convert to fraction form
    8,558.50/11,810.70 = 5,021.68/x
  3. Step 3: Cross multiply
    8,558.50x = 11,810.70 × 5,021.68
  4. Step 4: Simplify right side
    8,558.50x = 59,309,555.98
  5. Step 5: Solve for x
    x = 59,309,555.98/8,558.50
  6. Step 6: Final answer
    x = 6,929.90

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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.