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Finding the Fourth Proportional to 3,551.65, 4,907.79 and 3,380.94

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Solution

The fourth proportional to 3,551.65, 4,907.79 and 3,380.94 is: 4,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.65 : 4,907.79 = 3,380.94 : x
  2. Step 2: Convert to fraction form
    3,551.65/4,907.79 = 3,380.94/x
  3. Step 3: Cross multiply
    3,551.65x = 4,907.79 × 3,380.94
  4. Step 4: Simplify right side
    3,551.65x = 16,592,943.52
  5. Step 5: Solve for x
    x = 16,592,943.52/3,551.65
  6. Step 6: Final answer
    x = 4,671.90

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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.