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Finding the Fourth Proportional to 2,206.56, 3,310.10 and 907.84

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Solution

The fourth proportional to 2,206.56, 3,310.10 and 907.84 is: 1,361.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.56 : 3,310.10 = 907.84 : x
  2. Step 2: Convert to fraction form
    2,206.56/3,310.10 = 907.84/x
  3. Step 3: Cross multiply
    2,206.56x = 3,310.10 × 907.84
  4. Step 4: Simplify right side
    2,206.56x = 3,005,041.18
  5. Step 5: Solve for x
    x = 3,005,041.18/2,206.56
  6. Step 6: Final answer
    x = 1,361.87

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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.