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Finding the Fourth Proportional to 2,620.84, 3,616.84 and 1,441.99

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Solution

The fourth proportional to 2,620.84, 3,616.84 and 1,441.99 is: 1,989.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.84 : 3,616.84 = 1,441.99 : x
  2. Step 2: Convert to fraction form
    2,620.84/3,616.84 = 1,441.99/x
  3. Step 3: Cross multiply
    2,620.84x = 3,616.84 × 1,441.99
  4. Step 4: Simplify right side
    2,620.84x = 5,215,447.11
  5. Step 5: Solve for x
    x = 5,215,447.11/2,620.84
  6. Step 6: Final answer
    x = 1,989.99

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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.