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Finding the Fourth Proportional to 1,745.37, 2,408.45 and 999.45

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Solution

The fourth proportional to 1,745.37, 2,408.45 and 999.45 is: 1,379.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.37 : 2,408.45 = 999.45 : x
  2. Step 2: Convert to fraction form
    1,745.37/2,408.45 = 999.45/x
  3. Step 3: Cross multiply
    1,745.37x = 2,408.45 × 999.45
  4. Step 4: Simplify right side
    1,745.37x = 2,407,120.36
  5. Step 5: Solve for x
    x = 2,407,120.36/1,745.37
  6. Step 6: Final answer
    x = 1,379.15

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1.5x scale

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.