Home / 3,030.21-4,175.55-2,189.43

Finding the Fourth Proportional to 3,030.21, 4,175.55 and 2,189.43

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Solution

The fourth proportional to 3,030.21, 4,175.55 and 2,189.43 is: 3,016.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.21 : 4,175.55 = 2,189.43 : x
  2. Step 2: Convert to fraction form
    3,030.21/4,175.55 = 2,189.43/x
  3. Step 3: Cross multiply
    3,030.21x = 4,175.55 × 2,189.43
  4. Step 4: Simplify right side
    3,030.21x = 9,142,074.44
  5. Step 5: Solve for x
    x = 9,142,074.44/3,030.21
  6. Step 6: Final answer
    x = 3,016.98

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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.