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Finding the Fourth Proportional to 1,766.51, 2,649.21 and 1,222.19

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Solution

The fourth proportional to 1,766.51, 2,649.21 and 1,222.19 is: 1,832.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.51 : 2,649.21 = 1,222.19 : x
  2. Step 2: Convert to fraction form
    1,766.51/2,649.21 = 1,222.19/x
  3. Step 3: Cross multiply
    1,766.51x = 2,649.21 × 1,222.19
  4. Step 4: Simplify right side
    1,766.51x = 3,237,837.97
  5. Step 5: Solve for x
    x = 3,237,837.97/1,766.51
  6. Step 6: Final answer
    x = 1,832.90

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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.