Home / 1,347.30-2,021.16-481.56

Finding the Fourth Proportional to 1,347.30, 2,021.16 and 481.56

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Solution

The fourth proportional to 1,347.30, 2,021.16 and 481.56 is: 722.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.30 : 2,021.16 = 481.56 : x
  2. Step 2: Convert to fraction form
    1,347.30/2,021.16 = 481.56/x
  3. Step 3: Cross multiply
    1,347.30x = 2,021.16 × 481.56
  4. Step 4: Simplify right side
    1,347.30x = 973,309.81
  5. Step 5: Solve for x
    x = 973,309.81/1,347.30
  6. Step 6: Final answer
    x = 722.42

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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.