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Finding the Fourth Proportional to 1,372.61, 2,060.80 and 1,168.49

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Solution

The fourth proportional to 1,372.61, 2,060.80 and 1,168.49 is: 1,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.61 : 2,060.80 = 1,168.49 : x
  2. Step 2: Convert to fraction form
    1,372.61/2,060.80 = 1,168.49/x
  3. Step 3: Cross multiply
    1,372.61x = 2,060.80 × 1,168.49
  4. Step 4: Simplify right side
    1,372.61x = 2,408,010.97
  5. Step 5: Solve for x
    x = 2,408,010.97/1,372.61
  6. Step 6: Final answer
    x = 1,754.34

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1.5x scale

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.