Home / 2,930.12-4,394.96-1,286.69

Finding the Fourth Proportional to 2,930.12, 4,394.96 and 1,286.69

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Solution

The fourth proportional to 2,930.12, 4,394.96 and 1,286.69 is: 1,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.12 : 4,394.96 = 1,286.69 : x
  2. Step 2: Convert to fraction form
    2,930.12/4,394.96 = 1,286.69/x
  3. Step 3: Cross multiply
    2,930.12x = 4,394.96 × 1,286.69
  4. Step 4: Simplify right side
    2,930.12x = 5,654,927.50
  5. Step 5: Solve for x
    x = 5,654,927.50/2,930.12
  6. Step 6: Final answer
    x = 1,929.93

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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.