Home / 1,346.22-2,018.34-421.26

Finding the Fourth Proportional to 1,346.22, 2,018.34 and 421.26

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Solution

The fourth proportional to 1,346.22, 2,018.34 and 421.26 is: 631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346.22 : 2,018.34 = 421.26 : x
  2. Step 2: Convert to fraction form
    1,346.22/2,018.34 = 421.26/x
  3. Step 3: Cross multiply
    1,346.22x = 2,018.34 × 421.26
  4. Step 4: Simplify right side
    1,346.22x = 850,245.91
  5. Step 5: Solve for x
    x = 850,245.91/1,346.22
  6. Step 6: Final answer
    x = 631.58

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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.