Home / 2,175.09-3,001.41-1,278.60

Finding the Fourth Proportional to 2,175.09, 3,001.41 and 1,278.60

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Solution

The fourth proportional to 2,175.09, 3,001.41 and 1,278.60 is: 1,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.09 : 3,001.41 = 1,278.60 : x
  2. Step 2: Convert to fraction form
    2,175.09/3,001.41 = 1,278.60/x
  3. Step 3: Cross multiply
    2,175.09x = 3,001.41 × 1,278.60
  4. Step 4: Simplify right side
    2,175.09x = 3,837,602.83
  5. Step 5: Solve for x
    x = 3,837,602.83/2,175.09
  6. Step 6: Final answer
    x = 1,764.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.