Home / 2,930.80-4,394.68-1,081.84

Finding the Fourth Proportional to 2,930.80, 4,394.68 and 1,081.84

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Solution

The fourth proportional to 2,930.80, 4,394.68 and 1,081.84 is: 1,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.80 : 4,394.68 = 1,081.84 : x
  2. Step 2: Convert to fraction form
    2,930.80/4,394.68 = 1,081.84/x
  3. Step 3: Cross multiply
    2,930.80x = 4,394.68 × 1,081.84
  4. Step 4: Simplify right side
    2,930.80x = 4,754,340.61
  5. Step 5: Solve for x
    x = 4,754,340.61/2,930.80
  6. Step 6: Final answer
    x = 1,622.20

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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.