Home / 5,679.30-8,517.66-1,782.78

Finding the Fourth Proportional to 5,679.30, 8,517.66 and 1,782.78

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Solution

The fourth proportional to 5,679.30, 8,517.66 and 1,782.78 is: 2,673.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.30 : 8,517.66 = 1,782.78 : x
  2. Step 2: Convert to fraction form
    5,679.30/8,517.66 = 1,782.78/x
  3. Step 3: Cross multiply
    5,679.30x = 8,517.66 × 1,782.78
  4. Step 4: Simplify right side
    5,679.30x = 15,185,113.89
  5. Step 5: Solve for x
    x = 15,185,113.89/5,679.30
  6. Step 6: Final answer
    x = 2,673.77

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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.