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Finding the Fourth Proportional to 2,618.43, 3,920.22 and 2,372.08

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Solution

The fourth proportional to 2,618.43, 3,920.22 and 2,372.08 is: 3,551.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.43 : 3,920.22 = 2,372.08 : x
  2. Step 2: Convert to fraction form
    2,618.43/3,920.22 = 2,372.08/x
  3. Step 3: Cross multiply
    2,618.43x = 3,920.22 × 2,372.08
  4. Step 4: Simplify right side
    2,618.43x = 9,299,075.46
  5. Step 5: Solve for x
    x = 9,299,075.46/2,618.43
  6. Step 6: Final answer
    x = 3,551.39

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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.