Home / 1,745.97-2,408.35-1,247.74

Finding the Fourth Proportional to 1,745.97, 2,408.35 and 1,247.74

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Solution

The fourth proportional to 1,745.97, 2,408.35 and 1,247.74 is: 1,721.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.97 : 2,408.35 = 1,247.74 : x
  2. Step 2: Convert to fraction form
    1,745.97/2,408.35 = 1,247.74/x
  3. Step 3: Cross multiply
    1,745.97x = 2,408.35 × 1,247.74
  4. Step 4: Simplify right side
    1,745.97x = 3,004,994.63
  5. Step 5: Solve for x
    x = 3,004,994.63/1,745.97
  6. Step 6: Final answer
    x = 1,721.10

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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.