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Finding the Fourth Proportional to 8,011.84, 11,021.16 and 6,516.48

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Solution

The fourth proportional to 8,011.84, 11,021.16 and 6,516.48 is: 8,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,011.84 : 11,021.16 = 6,516.48 : x
  2. Step 2: Convert to fraction form
    8,011.84/11,021.16 = 6,516.48/x
  3. Step 3: Cross multiply
    8,011.84x = 11,021.16 × 6,516.48
  4. Step 4: Simplify right side
    8,011.84x = 71,819,168.72
  5. Step 5: Solve for x
    x = 71,819,168.72/8,011.84
  6. Step 6: Final answer
    x = 8,964.13

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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.