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Finding the Fourth Proportional to 8,178.99, 11,290.47 and 5,529.99

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Solution

The fourth proportional to 8,178.99, 11,290.47 and 5,529.99 is: 7,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.99 : 11,290.47 = 5,529.99 : x
  2. Step 2: Convert to fraction form
    8,178.99/11,290.47 = 5,529.99/x
  3. Step 3: Cross multiply
    8,178.99x = 11,290.47 × 5,529.99
  4. Step 4: Simplify right side
    8,178.99x = 62,436,186.20
  5. Step 5: Solve for x
    x = 62,436,186.20/8,178.99
  6. Step 6: Final answer
    x = 7,633.73

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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.