Home / 4,508.90-6,763.36-1,388.78

Finding the Fourth Proportional to 4,508.90, 6,763.36 and 1,388.78

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Solution

The fourth proportional to 4,508.90, 6,763.36 and 1,388.78 is: 2,083.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,508.90 : 6,763.36 = 1,388.78 : x
  2. Step 2: Convert to fraction form
    4,508.90/6,763.36 = 1,388.78/x
  3. Step 3: Cross multiply
    4,508.90x = 6,763.36 × 1,388.78
  4. Step 4: Simplify right side
    4,508.90x = 9,392,819.10
  5. Step 5: Solve for x
    x = 9,392,819.10/4,508.90
  6. Step 6: Final answer
    x = 2,083.17

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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.