Home / 2,930.25-4,395.15-1,286.81

Finding the Fourth Proportional to 2,930.25, 4,395.15 and 1,286.81

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Solution

The fourth proportional to 2,930.25, 4,395.15 and 1,286.81 is: 1,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.25 : 4,395.15 = 1,286.81 : x
  2. Step 2: Convert to fraction form
    2,930.25/4,395.15 = 1,286.81/x
  3. Step 3: Cross multiply
    2,930.25x = 4,395.15 × 1,286.81
  4. Step 4: Simplify right side
    2,930.25x = 5,655,718.15
  5. Step 5: Solve for x
    x = 5,655,718.15/2,930.25
  6. Step 6: Final answer
    x = 1,930.11

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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.