Home / 6,511.91-9,767.79-1,581.54

Finding the Fourth Proportional to 6,511.91, 9,767.79 and 1,581.54

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Solution

The fourth proportional to 6,511.91, 9,767.79 and 1,581.54 is: 2,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.91 : 9,767.79 = 1,581.54 : x
  2. Step 2: Convert to fraction form
    6,511.91/9,767.79 = 1,581.54/x
  3. Step 3: Cross multiply
    6,511.91x = 9,767.79 × 1,581.54
  4. Step 4: Simplify right side
    6,511.91x = 15,448,142.69
  5. Step 5: Solve for x
    x = 15,448,142.69/6,511.91
  6. Step 6: Final answer
    x = 2,372.29

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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.