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Finding the Fourth Proportional to 1,381.88, 1,907.93 and 1,052.01

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Solution

The fourth proportional to 1,381.88, 1,907.93 and 1,052.01 is: 1,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381.88 : 1,907.93 = 1,052.01 : x
  2. Step 2: Convert to fraction form
    1,381.88/1,907.93 = 1,052.01/x
  3. Step 3: Cross multiply
    1,381.88x = 1,907.93 × 1,052.01
  4. Step 4: Simplify right side
    1,381.88x = 2,007,164.07
  5. Step 5: Solve for x
    x = 2,007,164.07/1,381.88
  6. Step 6: Final answer
    x = 1,452.49

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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.