Home / 1,645.20-2,458.44-1,180.80

Finding the Fourth Proportional to 1,645.20, 2,458.44 and 1,180.80

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Solution

The fourth proportional to 1,645.20, 2,458.44 and 1,180.80 is: 1,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.20 : 2,458.44 = 1,180.80 : x
  2. Step 2: Convert to fraction form
    1,645.20/2,458.44 = 1,180.80/x
  3. Step 3: Cross multiply
    1,645.20x = 2,458.44 × 1,180.80
  4. Step 4: Simplify right side
    1,645.20x = 2,902,925.95
  5. Step 5: Solve for x
    x = 2,902,925.95/1,645.20
  6. Step 6: Final answer
    x = 1,764.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.