Home / 3,110.19-4,290.19-1,930.42

Finding the Fourth Proportional to 3,110.19, 4,290.19 and 1,930.42

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Solution

The fourth proportional to 3,110.19, 4,290.19 and 1,930.42 is: 2,662.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.19 : 4,290.19 = 1,930.42 : x
  2. Step 2: Convert to fraction form
    3,110.19/4,290.19 = 1,930.42/x
  3. Step 3: Cross multiply
    3,110.19x = 4,290.19 × 1,930.42
  4. Step 4: Simplify right side
    3,110.19x = 8,281,868.58
  5. Step 5: Solve for x
    x = 8,281,868.58/3,110.19
  6. Step 6: Final answer
    x = 2,662.82

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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.