Home / 7,463.40-11,175.60-3,990.12

Finding the Fourth Proportional to 7,463.40, 11,175.60 and 3,990.12

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Solution

The fourth proportional to 7,463.40, 11,175.60 and 3,990.12 is: 5,974.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,463.40 : 11,175.60 = 3,990.12 : x
  2. Step 2: Convert to fraction form
    7,463.40/11,175.60 = 3,990.12/x
  3. Step 3: Cross multiply
    7,463.40x = 11,175.60 × 3,990.12
  4. Step 4: Simplify right side
    7,463.40x = 44,591,985.07
  5. Step 5: Solve for x
    x = 44,591,985.07/7,463.40
  6. Step 6: Final answer
    x = 5,974.75

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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.