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Finding the Fourth Proportional to 8,911, 13,369.74 and 4,525.12

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Solution

The fourth proportional to 8,911, 13,369.74 and 4,525.12 is: 6,789.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911 : 13,369.74 = 4,525.12 : x
  2. Step 2: Convert to fraction form
    8,911/13,369.74 = 4,525.12/x
  3. Step 3: Cross multiply
    8,911x = 13,369.74 × 4,525.12
  4. Step 4: Simplify right side
    8,911x = 60,499,677.87
  5. Step 5: Solve for x
    x = 60,499,677.87/8,911
  6. Step 6: Final answer
    x = 6,789.33

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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.