Home / 5,476.84-8,215.44-1,581.28

Finding the Fourth Proportional to 5,476.84, 8,215.44 and 1,581.28

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Solution

The fourth proportional to 5,476.84, 8,215.44 and 1,581.28 is: 2,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,476.84 : 8,215.44 = 1,581.28 : x
  2. Step 2: Convert to fraction form
    5,476.84/8,215.44 = 1,581.28/x
  3. Step 3: Cross multiply
    5,476.84x = 8,215.44 × 1,581.28
  4. Step 4: Simplify right side
    5,476.84x = 12,990,910.96
  5. Step 5: Solve for x
    x = 12,990,910.96/5,476.84
  6. Step 6: Final answer
    x = 2,371.97

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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.