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Finding the Fourth Proportional to 3,605.68, 4,975.36 and 2,189.67

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Solution

The fourth proportional to 3,605.68, 4,975.36 and 2,189.67 is: 3,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.68 : 4,975.36 = 2,189.67 : x
  2. Step 2: Convert to fraction form
    3,605.68/4,975.36 = 2,189.67/x
  3. Step 3: Cross multiply
    3,605.68x = 4,975.36 × 2,189.67
  4. Step 4: Simplify right side
    3,605.68x = 10,894,396.53
  5. Step 5: Solve for x
    x = 10,894,396.53/3,605.68
  6. Step 6: Final answer
    x = 3,021.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.