Home / 1,745.02-2,408.26-999.21

Finding the Fourth Proportional to 1,745.02, 2,408.26 and 999.21

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Solution

The fourth proportional to 1,745.02, 2,408.26 and 999.21 is: 1,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.02 : 2,408.26 = 999.21 : x
  2. Step 2: Convert to fraction form
    1,745.02/2,408.26 = 999.21/x
  3. Step 3: Cross multiply
    1,745.02x = 2,408.26 × 999.21
  4. Step 4: Simplify right side
    1,745.02x = 2,406,357.47
  5. Step 5: Solve for x
    x = 2,406,357.47/1,745.02
  6. Step 6: Final answer
    x = 1,378.99

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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.