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Finding the Fourth Proportional to 6,611.76, 9,117.72 and 5,193

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Solution

The fourth proportional to 6,611.76, 9,117.72 and 5,193 is: 7,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.76 : 9,117.72 = 5,193 : x
  2. Step 2: Convert to fraction form
    6,611.76/9,117.72 = 5,193/x
  3. Step 3: Cross multiply
    6,611.76x = 9,117.72 × 5,193
  4. Step 4: Simplify right side
    6,611.76x = 47,348,319.96
  5. Step 5: Solve for x
    x = 47,348,319.96/6,611.76
  6. Step 6: Final answer
    x = 7,161.23

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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.