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Finding the Fourth Proportional to 6,611.80, 9,125.87 and 4,490.87

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Solution

The fourth proportional to 6,611.80, 9,125.87 and 4,490.87 is: 6,198.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.80 : 9,125.87 = 4,490.87 : x
  2. Step 2: Convert to fraction form
    6,611.80/9,125.87 = 4,490.87/x
  3. Step 3: Cross multiply
    6,611.80x = 9,125.87 × 4,490.87
  4. Step 4: Simplify right side
    6,611.80x = 40,983,095.81
  5. Step 5: Solve for x
    x = 40,983,095.81/6,611.80
  6. Step 6: Final answer
    x = 6,198.48

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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.