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Finding the Fourth Proportional to 8,520.66, 11,751.48 and 6,749.46

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Solution

The fourth proportional to 8,520.66, 11,751.48 and 6,749.46 is: 9,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.66 : 11,751.48 = 6,749.46 : x
  2. Step 2: Convert to fraction form
    8,520.66/11,751.48 = 6,749.46/x
  3. Step 3: Cross multiply
    8,520.66x = 11,751.48 × 6,749.46
  4. Step 4: Simplify right side
    8,520.66x = 79,316,144.20
  5. Step 5: Solve for x
    x = 79,316,144.20/8,520.66
  6. Step 6: Final answer
    x = 9,308.69

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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.