Home / 3,920.13-5,876.07-1,286.95

Finding the Fourth Proportional to 3,920.13, 5,876.07 and 1,286.95

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Solution

The fourth proportional to 3,920.13, 5,876.07 and 1,286.95 is: 1,929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.13 : 5,876.07 = 1,286.95 : x
  2. Step 2: Convert to fraction form
    3,920.13/5,876.07 = 1,286.95/x
  3. Step 3: Cross multiply
    3,920.13x = 5,876.07 × 1,286.95
  4. Step 4: Simplify right side
    3,920.13x = 7,562,208.29
  5. Step 5: Solve for x
    x = 7,562,208.29/3,920.13
  6. Step 6: Final answer
    x = 1,929.07

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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.