Home / 1,776.76-2,664.19-680.50

Finding the Fourth Proportional to 1,776.76, 2,664.19 and 680.50

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Solution

The fourth proportional to 1,776.76, 2,664.19 and 680.50 is: 1,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.76 : 2,664.19 = 680.50 : x
  2. Step 2: Convert to fraction form
    1,776.76/2,664.19 = 680.50/x
  3. Step 3: Cross multiply
    1,776.76x = 2,664.19 × 680.50
  4. Step 4: Simplify right side
    1,776.76x = 1,812,981.30
  5. Step 5: Solve for x
    x = 1,812,981.30/1,776.76
  6. Step 6: Final answer
    x = 1,020.39

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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.