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Finding the Fourth Proportional to 1,867.41, 2,801.43 and 697.38

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Solution

The fourth proportional to 1,867.41, 2,801.43 and 697.38 is: 1,046.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.41 : 2,801.43 = 697.38 : x
  2. Step 2: Convert to fraction form
    1,867.41/2,801.43 = 697.38/x
  3. Step 3: Cross multiply
    1,867.41x = 2,801.43 × 697.38
  4. Step 4: Simplify right side
    1,867.41x = 1,953,661.25
  5. Step 5: Solve for x
    x = 1,953,661.25/1,867.41
  6. Step 6: Final answer
    x = 1,046.19

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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.