Home / 1,776.86-2,664.77-680.63

Finding the Fourth Proportional to 1,776.86, 2,664.77 and 680.63

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Solution

The fourth proportional to 1,776.86, 2,664.77 and 680.63 is: 1,020.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776.86 : 2,664.77 = 680.63 : x
  2. Step 2: Convert to fraction form
    1,776.86/2,664.77 = 680.63/x
  3. Step 3: Cross multiply
    1,776.86x = 2,664.77 × 680.63
  4. Step 4: Simplify right side
    1,776.86x = 1,813,705.68
  5. Step 5: Solve for x
    x = 1,813,705.68/1,776.86
  6. Step 6: Final answer
    x = 1,020.74

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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.