Home / 2,175.05-3,261.06-1,187.87

Finding the Fourth Proportional to 2,175.05, 3,261.06 and 1,187.87

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Solution

The fourth proportional to 2,175.05, 3,261.06 and 1,187.87 is: 1,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.05 : 3,261.06 = 1,187.87 : x
  2. Step 2: Convert to fraction form
    2,175.05/3,261.06 = 1,187.87/x
  3. Step 3: Cross multiply
    2,175.05x = 3,261.06 × 1,187.87
  4. Step 4: Simplify right side
    2,175.05x = 3,873,699.04
  5. Step 5: Solve for x
    x = 3,873,699.04/2,175.05
  6. Step 6: Final answer
    x = 1,780.97

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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.