Home / 1,745.39-2,408.49-999.23

Finding the Fourth Proportional to 1,745.39, 2,408.49 and 999.23

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Solution

The fourth proportional to 1,745.39, 2,408.49 and 999.23 is: 1,378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.39 : 2,408.49 = 999.23 : x
  2. Step 2: Convert to fraction form
    1,745.39/2,408.49 = 999.23/x
  3. Step 3: Cross multiply
    1,745.39x = 2,408.49 × 999.23
  4. Step 4: Simplify right side
    1,745.39x = 2,406,623.42
  5. Step 5: Solve for x
    x = 2,406,623.42/1,745.39
  6. Step 6: Final answer
    x = 1,378.84

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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.