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Finding the Fourth Proportional to 1,745.61, 2,408.97 and 959.70

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Solution

The fourth proportional to 1,745.61, 2,408.97 and 959.70 is: 1,324.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.61 : 2,408.97 = 959.70 : x
  2. Step 2: Convert to fraction form
    1,745.61/2,408.97 = 959.70/x
  3. Step 3: Cross multiply
    1,745.61x = 2,408.97 × 959.70
  4. Step 4: Simplify right side
    1,745.61x = 2,311,888.51
  5. Step 5: Solve for x
    x = 2,311,888.51/1,745.61
  6. Step 6: Final answer
    x = 1,324.40

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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.