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Finding the Fourth Proportional to 3,890.97, 5,808.22 and 3,601.90

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Solution

The fourth proportional to 3,890.97, 5,808.22 and 3,601.90 is: 5,376.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.97 : 5,808.22 = 3,601.90 : x
  2. Step 2: Convert to fraction form
    3,890.97/5,808.22 = 3,601.90/x
  3. Step 3: Cross multiply
    3,890.97x = 5,808.22 × 3,601.90
  4. Step 4: Simplify right side
    3,890.97x = 20,920,646.13
  5. Step 5: Solve for x
    x = 20,920,646.13/3,890.97
  6. Step 6: Final answer
    x = 5,376.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.