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Finding the Fourth Proportional to 2,001, 2,762.10 and 1,381.80

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Solution

The fourth proportional to 2,001, 2,762.10 and 1,381.80 is: 1,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,001 : 2,762.10 = 1,381.80 : x
  2. Step 2: Convert to fraction form
    2,001/2,762.10 = 1,381.80/x
  3. Step 3: Cross multiply
    2,001x = 2,762.10 × 1,381.80
  4. Step 4: Simplify right side
    2,001x = 3,816,669.78
  5. Step 5: Solve for x
    x = 3,816,669.78/2,001
  6. Step 6: Final answer
    x = 1,907.38

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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.