Home / 1,421.37-2,132.30-496.64

Finding the Fourth Proportional to 1,421.37, 2,132.30 and 496.64

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Solution

The fourth proportional to 1,421.37, 2,132.30 and 496.64 is: 745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.37 : 2,132.30 = 496.64 : x
  2. Step 2: Convert to fraction form
    1,421.37/2,132.30 = 496.64/x
  3. Step 3: Cross multiply
    1,421.37x = 2,132.30 × 496.64
  4. Step 4: Simplify right side
    1,421.37x = 1,058,992.04
  5. Step 5: Solve for x
    x = 1,058,992.04/1,421.37
  6. Step 6: Final answer
    x = 745.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.