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Finding the Fourth Proportional to 3,679.65, 5,507.15 and 3,021.50

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Solution

The fourth proportional to 3,679.65, 5,507.15 and 3,021.50 is: 4,522.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.65 : 5,507.15 = 3,021.50 : x
  2. Step 2: Convert to fraction form
    3,679.65/5,507.15 = 3,021.50/x
  3. Step 3: Cross multiply
    3,679.65x = 5,507.15 × 3,021.50
  4. Step 4: Simplify right side
    3,679.65x = 16,639,811.08
  5. Step 5: Solve for x
    x = 16,639,811.08/3,679.65
  6. Step 6: Final answer
    x = 4,522.12

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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.