Home / 3,109.44-4,290.28-1,764.75

Finding the Fourth Proportional to 3,109.44, 4,290.28 and 1,764.75

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Solution

The fourth proportional to 3,109.44, 4,290.28 and 1,764.75 is: 2,434.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.44 : 4,290.28 = 1,764.75 : x
  2. Step 2: Convert to fraction form
    3,109.44/4,290.28 = 1,764.75/x
  3. Step 3: Cross multiply
    3,109.44x = 4,290.28 × 1,764.75
  4. Step 4: Simplify right side
    3,109.44x = 7,571,253.14
  5. Step 5: Solve for x
    x = 7,571,253.14/3,109.44
  6. Step 6: Final answer
    x = 2,434.93

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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.