Home / 1,781.20-2,677.56-1,772.56

Finding the Fourth Proportional to 1,781.20, 2,677.56 and 1,772.56

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Solution

The fourth proportional to 1,781.20, 2,677.56 and 1,772.56 is: 2,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.20 : 2,677.56 = 1,772.56 : x
  2. Step 2: Convert to fraction form
    1,781.20/2,677.56 = 1,772.56/x
  3. Step 3: Cross multiply
    1,781.20x = 2,677.56 × 1,772.56
  4. Step 4: Simplify right side
    1,781.20x = 4,746,135.75
  5. Step 5: Solve for x
    x = 4,746,135.75/1,781.20
  6. Step 6: Final answer
    x = 2,664.57

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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.