Home / 1,766.90-2,651.25-727.70

Finding the Fourth Proportional to 1,766.90, 2,651.25 and 727.70

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Solution

The fourth proportional to 1,766.90, 2,651.25 and 727.70 is: 1,091.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.90 : 2,651.25 = 727.70 : x
  2. Step 2: Convert to fraction form
    1,766.90/2,651.25 = 727.70/x
  3. Step 3: Cross multiply
    1,766.90x = 2,651.25 × 727.70
  4. Step 4: Simplify right side
    1,766.90x = 1,929,314.63
  5. Step 5: Solve for x
    x = 1,929,314.63/1,766.90
  6. Step 6: Final answer
    x = 1,091.92

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1.5x scale

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.