Home / 1,766.12-2,649.42-611.72

Finding the Fourth Proportional to 1,766.12, 2,649.42 and 611.72

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Solution

The fourth proportional to 1,766.12, 2,649.42 and 611.72 is: 917.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.12 : 2,649.42 = 611.72 : x
  2. Step 2: Convert to fraction form
    1,766.12/2,649.42 = 611.72/x
  3. Step 3: Cross multiply
    1,766.12x = 2,649.42 × 611.72
  4. Step 4: Simplify right side
    1,766.12x = 1,620,703.20
  5. Step 5: Solve for x
    x = 1,620,703.20/1,766.12
  6. Step 6: Final answer
    x = 917.66

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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.