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Finding the Fourth Proportional to 5,690.28, 7,885.83 and 5,611

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Solution

The fourth proportional to 5,690.28, 7,885.83 and 5,611 is: 7,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,690.28 : 7,885.83 = 5,611 : x
  2. Step 2: Convert to fraction form
    5,690.28/7,885.83 = 5,611/x
  3. Step 3: Cross multiply
    5,690.28x = 7,885.83 × 5,611
  4. Step 4: Simplify right side
    5,690.28x = 44,247,392.13
  5. Step 5: Solve for x
    x = 44,247,392.13/5,690.28
  6. Step 6: Final answer
    x = 7,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.