Home / 1,764.88-2,646.78-1,220.56

Finding the Fourth Proportional to 1,764.88, 2,646.78 and 1,220.56

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Solution

The fourth proportional to 1,764.88, 2,646.78 and 1,220.56 is: 1,830.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764.88 : 2,646.78 = 1,220.56 : x
  2. Step 2: Convert to fraction form
    1,764.88/2,646.78 = 1,220.56/x
  3. Step 3: Cross multiply
    1,764.88x = 2,646.78 × 1,220.56
  4. Step 4: Simplify right side
    1,764.88x = 3,230,553.80
  5. Step 5: Solve for x
    x = 3,230,553.80/1,764.88
  6. Step 6: Final answer
    x = 1,830.47

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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.