Home / 1,481.28-2,222.30-507.39

Finding the Fourth Proportional to 1,481.28, 2,222.30 and 507.39

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Solution

The fourth proportional to 1,481.28, 2,222.30 and 507.39 is: 761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.28 : 2,222.30 = 507.39 : x
  2. Step 2: Convert to fraction form
    1,481.28/2,222.30 = 507.39/x
  3. Step 3: Cross multiply
    1,481.28x = 2,222.30 × 507.39
  4. Step 4: Simplify right side
    1,481.28x = 1,127,561.69
  5. Step 5: Solve for x
    x = 1,127,561.69/1,481.28
  6. Step 6: Final answer
    x = 761.21

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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.