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Finding the Fourth Proportional to 3,087.80, 4,623.18 and 1,623.80

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Solution

The fourth proportional to 3,087.80, 4,623.18 and 1,623.80 is: 2,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.80 : 4,623.18 = 1,623.80 : x
  2. Step 2: Convert to fraction form
    3,087.80/4,623.18 = 1,623.80/x
  3. Step 3: Cross multiply
    3,087.80x = 4,623.18 × 1,623.80
  4. Step 4: Simplify right side
    3,087.80x = 7,507,119.68
  5. Step 5: Solve for x
    x = 7,507,119.68/3,087.80
  6. Step 6: Final answer
    x = 2,431.22

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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.