Home / 1,819.96-2,729.94-521.56

Finding the Fourth Proportional to 1,819.96, 2,729.94 and 521.56

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Solution

The fourth proportional to 1,819.96, 2,729.94 and 521.56 is: 782.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,819.96 : 2,729.94 = 521.56 : x
  2. Step 2: Convert to fraction form
    1,819.96/2,729.94 = 521.56/x
  3. Step 3: Cross multiply
    1,819.96x = 2,729.94 × 521.56
  4. Step 4: Simplify right side
    1,819.96x = 1,423,827.51
  5. Step 5: Solve for x
    x = 1,423,827.51/1,819.96
  6. Step 6: Final answer
    x = 782.34

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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.