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Finding the Fourth Proportional to 1,372.95, 1,894.96 and 1,262.25

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Solution

The fourth proportional to 1,372.95, 1,894.96 and 1,262.25 is: 1,742.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.95 : 1,894.96 = 1,262.25 : x
  2. Step 2: Convert to fraction form
    1,372.95/1,894.96 = 1,262.25/x
  3. Step 3: Cross multiply
    1,372.95x = 1,894.96 × 1,262.25
  4. Step 4: Simplify right side
    1,372.95x = 2,391,902.21
  5. Step 5: Solve for x
    x = 2,391,902.21/1,372.95
  6. Step 6: Final answer
    x = 1,742.17

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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.