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Finding the Fourth Proportional to 6,999.62, 9,659.25 and 4,166.35

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Solution

The fourth proportional to 6,999.62, 9,659.25 and 4,166.35 is: 5,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.62 : 9,659.25 = 4,166.35 : x
  2. Step 2: Convert to fraction form
    6,999.62/9,659.25 = 4,166.35/x
  3. Step 3: Cross multiply
    6,999.62x = 9,659.25 × 4,166.35
  4. Step 4: Simplify right side
    6,999.62x = 40,243,816.24
  5. Step 5: Solve for x
    x = 40,243,816.24/6,999.62
  6. Step 6: Final answer
    x = 5,749.43

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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.