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Finding the Fourth Proportional to 8,991.66, 13,490.72 and 4,057.54

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Solution

The fourth proportional to 8,991.66, 13,490.72 and 4,057.54 is: 6,087.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.66 : 13,490.72 = 4,057.54 : x
  2. Step 2: Convert to fraction form
    8,991.66/13,490.72 = 4,057.54/x
  3. Step 3: Cross multiply
    8,991.66x = 13,490.72 × 4,057.54
  4. Step 4: Simplify right side
    8,991.66x = 54,739,136.03
  5. Step 5: Solve for x
    x = 54,739,136.03/8,991.66
  6. Step 6: Final answer
    x = 6,087.77

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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.