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Finding the Fourth Proportional to 3,489.67, 4,813.50 and 2,229.40

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Solution

The fourth proportional to 3,489.67, 4,813.50 and 2,229.40 is: 3,075.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.67 : 4,813.50 = 2,229.40 : x
  2. Step 2: Convert to fraction form
    3,489.67/4,813.50 = 2,229.40/x
  3. Step 3: Cross multiply
    3,489.67x = 4,813.50 × 2,229.40
  4. Step 4: Simplify right side
    3,489.67x = 10,731,216.90
  5. Step 5: Solve for x
    x = 10,731,216.90/3,489.67
  6. Step 6: Final answer
    x = 3,075.14

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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.