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Finding the Fourth Proportional to 3,990.53, 5,983.79 and 2,325.19

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Solution

The fourth proportional to 3,990.53, 5,983.79 and 2,325.19 is: 3,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.53 : 5,983.79 = 2,325.19 : x
  2. Step 2: Convert to fraction form
    3,990.53/5,983.79 = 2,325.19/x
  3. Step 3: Cross multiply
    3,990.53x = 5,983.79 × 2,325.19
  4. Step 4: Simplify right side
    3,990.53x = 13,913,422.08
  5. Step 5: Solve for x
    x = 13,913,422.08/3,990.53
  6. Step 6: Final answer
    x = 3,486.61

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.