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Finding the Fourth Proportional to 1,372.29, 2,058 and 1,152.98

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Solution

The fourth proportional to 1,372.29, 2,058 and 1,152.98 is: 1,729.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.29 : 2,058 = 1,152.98 : x
  2. Step 2: Convert to fraction form
    1,372.29/2,058 = 1,152.98/x
  3. Step 3: Cross multiply
    1,372.29x = 2,058 × 1,152.98
  4. Step 4: Simplify right side
    1,372.29x = 2,372,832.84
  5. Step 5: Solve for x
    x = 2,372,832.84/1,372.29
  6. Step 6: Final answer
    x = 1,729.10

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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.