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Finding the Fourth Proportional to 3,555.75, 4,907.13 and 1,983.84

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Solution

The fourth proportional to 3,555.75, 4,907.13 and 1,983.84 is: 2,737.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.75 : 4,907.13 = 1,983.84 : x
  2. Step 2: Convert to fraction form
    3,555.75/4,907.13 = 1,983.84/x
  3. Step 3: Cross multiply
    3,555.75x = 4,907.13 × 1,983.84
  4. Step 4: Simplify right side
    3,555.75x = 9,734,960.78
  5. Step 5: Solve for x
    x = 9,734,960.78/3,555.75
  6. Step 6: Final answer
    x = 2,737.81

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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.