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Finding the Fourth Proportional to 8,811.72, 13,208.64 and 5,527.08

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Solution

The fourth proportional to 8,811.72, 13,208.64 and 5,527.08 is: 8,285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.72 : 13,208.64 = 5,527.08 : x
  2. Step 2: Convert to fraction form
    8,811.72/13,208.64 = 5,527.08/x
  3. Step 3: Cross multiply
    8,811.72x = 13,208.64 × 5,527.08
  4. Step 4: Simplify right side
    8,811.72x = 73,005,209.97
  5. Step 5: Solve for x
    x = 73,005,209.97/8,811.72
  6. Step 6: Final answer
    x = 8,285.01

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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.