Home / 1,481.13-2,221.65-750.30

Finding the Fourth Proportional to 1,481.13, 2,221.65 and 750.30

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Solution

The fourth proportional to 1,481.13, 2,221.65 and 750.30 is: 1,125.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.13 : 2,221.65 = 750.30 : x
  2. Step 2: Convert to fraction form
    1,481.13/2,221.65 = 750.30/x
  3. Step 3: Cross multiply
    1,481.13x = 2,221.65 × 750.30
  4. Step 4: Simplify right side
    1,481.13x = 1,666,904.00
  5. Step 5: Solve for x
    x = 1,666,904.00/1,481.13
  6. Step 6: Final answer
    x = 1,125.43

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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.