Home / 1,213.09-1,819.92-347.38

Finding the Fourth Proportional to 1,213.09, 1,819.92 and 347.38

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Solution

The fourth proportional to 1,213.09, 1,819.92 and 347.38 is: 521.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.09 : 1,819.92 = 347.38 : x
  2. Step 2: Convert to fraction form
    1,213.09/1,819.92 = 347.38/x
  3. Step 3: Cross multiply
    1,213.09x = 1,819.92 × 347.38
  4. Step 4: Simplify right side
    1,213.09x = 632,203.81
  5. Step 5: Solve for x
    x = 632,203.81/1,213.09
  6. Step 6: Final answer
    x = 521.15

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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.