Home / 1,341.05-2,011.19-518.85

Finding the Fourth Proportional to 1,341.05, 2,011.19 and 518.85

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Solution

The fourth proportional to 1,341.05, 2,011.19 and 518.85 is: 778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.05 : 2,011.19 = 518.85 : x
  2. Step 2: Convert to fraction form
    1,341.05/2,011.19 = 518.85/x
  3. Step 3: Cross multiply
    1,341.05x = 2,011.19 × 518.85
  4. Step 4: Simplify right side
    1,341.05x = 1,043,503.34
  5. Step 5: Solve for x
    x = 1,043,503.34/1,341.05
  6. Step 6: Final answer
    x = 778.13

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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.