Home / 1,930.93-2,891.25-1,315.85

Finding the Fourth Proportional to 1,930.93, 2,891.25 and 1,315.85

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Solution

The fourth proportional to 1,930.93, 2,891.25 and 1,315.85 is: 1,970.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,930.93 : 2,891.25 = 1,315.85 : x
  2. Step 2: Convert to fraction form
    1,930.93/2,891.25 = 1,315.85/x
  3. Step 3: Cross multiply
    1,930.93x = 2,891.25 × 1,315.85
  4. Step 4: Simplify right side
    1,930.93x = 3,804,436.86
  5. Step 5: Solve for x
    x = 3,804,436.86/1,930.93
  6. Step 6: Final answer
    x = 1,970.26

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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.